JP7747491B2 - Information processing device - Google Patents

Description

The present invention relates to an information processing device.

To evaluate the communication quality between antennas that make up a wireless communication network, line-of-sight surveys are conducted to determine whether there are any obstacles between the antennas. In line-of-sight surveys, the distance between the antennas and any objects located between them is measured. The Fresnel radius (radius of the Fresnel area) at the object's location is calculated based on the distance between the object and the antenna. If the object is located within the Fresnel area, it is determined that the object will obstruct communication between the antennas. Conventional line-of-sight surveys require workers to climb to high places carrying surveying equipment such as transits, which places a heavy burden on the workers.

Patent Document 1 below also discloses a line quality determination device that determines the communication quality between a first antenna and a second antenna. The line quality determination device aims a scope from the first antenna to the second antenna to capture an image, and if an obstacle is present within the scope's field of view, measures the distance from the first antenna to the obstacle. Based on the distance measurement result and the distance between the first antenna and the second antenna, the line quality determination device displays an image on a display unit in which a Fresnel zone is superimposed on the captured image, and also recognizes the obstacle in the image to determine whether or not an obstacle exists within the Fresnel zone.

Japanese Patent Application Laid-Open No. 2007-312021

However, with the line quality determination device disclosed in Patent Document 1, if there are multiple obstacles within the field of view of the scope, the above determination must be performed for all of the obstacles. This creates problems such as a heavy processing load on the line quality determination device and long processing times.

In order to solve the above problems, an information processing device according to a preferred embodiment of the present invention includes an acquisition unit that acquires a captured image captured in a direction from a first antenna to a second antenna; a reception unit that receives the distance from a determination target object to the first antenna among multiple objects included in the captured image; a determination unit that determines whether the determination target object will interfere with wireless communication between the first antenna and the second antenna based on the distance received by the reception unit; a generation unit that generates a first image indicating a Fresnel circle that is the outer edge of a Fresnel region corresponding to the distance received by the reception unit; and a display control unit that displays a display image including the first image and the captured image on a display device. When the determination unit's determination result is negative and an object exists inside the Fresnel circle that is the next closest to the first antenna after the determination target object, the reception unit designates the object as a new determination target object and receives the distance of the new determination target object. The reception unit repeats reception and the determination unit repeats determination until there are no more objects located inside the Fresnel circle and between the first antenna and the second antenna.

The present invention can reduce the processing load on information processing devices used in forecast surveys and shorten processing times.

FIG. 2 is a diagram illustrating a wireless station B in a wireless communication network. FIG. 1 is a block diagram showing the configuration of a determination system 1. FIG. 2 is a block diagram showing the configuration of an information processing device 10A. FIG. 2 is a block diagram showing the configuration of drone 20A. 10 is a flowchart showing the procedure of a process executed by the processing device 110. FIG. 2 is a diagram showing an example of a display on a display device 150 of an information processing device 10A. FIG. 2 is an enlarged view of a captured image Pc. FIG. 2 is an enlarged view of a captured image Pc. FIG. 2 is an enlarged view of a captured image Pc. FIG. 2 is an enlarged view of a captured image Pc. FIG. 2 is an enlarged view of a captured image Pc. FIG. 2 is an enlarged view of a captured image Pc. FIG. 2 is a diagram schematically illustrating a fixed angle circle Sd. FIG. 2 is a diagram schematically illustrating the relationship between a constant angle circle Sd and a Fresnel region Fr. 10 is a graph showing the relationship between the Fresnel radius rf and the radius rd of the constant angle circle Sd. 1 is a diagram schematically illustrating the relationship between a Fresnel circle Sf and a line-of-sight angle θf. FIG. FIG. 2 is a block diagram showing the configuration of an information processing device 10B. FIG. 2 is a block diagram showing the configuration of drone 20B. 10 is a flowchart showing the procedure of a process executed by the processing device 110.

Embodiments of the present invention will be described below with reference to the drawings. Note that the dimensions and scale of each part in the drawings may differ from those of the actual product. The embodiments described below are preferred examples of the present invention. Therefore, various technically desirable limitations are applied to the following embodiments. However, the scope of the present invention is not limited to these forms unless otherwise specified in the following description to the effect that the present invention is limited.

1. First Embodiment Fig. 1 is a diagram schematically illustrating a wireless station B in a wireless communication network. In this embodiment, a wireless communication network using microwaves is assumed as an example of the wireless communication network. The wireless communication network includes a plurality of wireless stations B (for example, a first wireless station B1 and a second wireless station B2 shown in Fig. 1). As shown in Fig. 1, the first wireless station B1 is provided with a first antenna A1, and the second wireless station B2 is provided with a second antenna A2. Wireless communication between the first wireless station B1 and the second wireless station B2 is achieved by propagation of radio waves between the first antenna A1 and the second antenna A2.

Whether a wireless communication transmission path is established between the first antenna A1 and the second antenna A2 is determined by the presence or absence of an object O within the Fresnel region Fr. If an object O (e.g., objects Oa and Ob in Figure 1) is located in the Fresnel region Fr between the first antenna A1 and the second antenna A2, the quality of wireless communication may deteriorate due to increased transmission loss. For example, in Figure 1, object Oa is located within the Fresnel region Fr, and therefore may affect the transmission state of radio waves. On the other hand, object Ob is not located within the Fresnel region Fr, and therefore does not affect the transmission state of radio waves. Examples of objects O include buildings, steel towers, and trees.

The Fresnel region Fr is the range where curved propagation paths exist, with the difference in propagation path from the shortest straight-line path connecting the antennas being within half a wavelength. The Fresnel region Fr is defined as a spheroid with its axis at the line of sight Ls, which is the shortest straight line connecting the first antenna A1 and the second antenna A2. If the distance from any point P on the line of sight Ls to the first antenna A1 is Dp, the distance from the first antenna A1 to the second antenna A2 (hereinafter referred to as the "section distance") is D0, the frequency of the radio waves transmitted between the antennas is f, and the speed of light is C, the radius of the Fresnel region Fr at the position of point P (hereinafter referred to as the "Fresnel radius rf") is given by the following equation (1). Furthermore, the circle representing the outer edge of the Fresnel region Fr at the position of point P (a circle centered on the line of sight Ls and with a radius of the Fresnel radius rf) is defined as the Fresnel circle Sf. Furthermore, if we consider an imaginary line connecting the first antenna A1 and any point on the Fresnel circle Sf, the angle between this imaginary line and the line of sight Ls is the line of sight angle θf.

Figure 2 is a block diagram showing the configuration of the determination system 1. The determination system 1 shown in Figure 2 determines whether a wireless communication transmission path is secured between the first antenna A1 and the second antenna A2. The determination system 1 includes an information processing device 10A, a drone 20A, and an operation device 30. The flight of the drone 20A is controlled by the operation device 30, which is operated by an operator. The drone 20A is an example of an air vehicle. The drone 20A includes an imaging device 230 (see Figure 4). The information processing device 10A acquires images captured by the imaging device 230 from the drone 20A using wireless communication.

Figure 3 is a block diagram showing the configuration of information processing device 10A. Information processing device 10A includes a processing device 110, a storage device 120, a communication device 130, an input device 140, and a display device 150.

In the following description, the term "apparatus" can be interpreted as a circuit, device, unit, etc. The hardware configuration of information processing device 10A may be configured to include one or more of the devices shown in the figure, or may be configured to exclude some of the devices.

The processing device 110 is a processor that controls the entire information processing device 10A and is composed of, for example, one or more chips. The processing device 110 is composed of, for example, a central processing unit (CPU) that includes an interface with peripheral devices, an arithmetic unit, and registers. Note that some or all of the functions of the processing device 110 may be realized by hardware such as a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), or an FPGA (Field Programmable Gate Array). The processing device 110 executes various processes in parallel or sequentially.

The processing device 110 functions as an acquisition unit 111, a reception unit 112, a determination unit 113, a generation unit 114, and a display control unit 115, for example, by executing the control program PR1 read from the storage device 120. In other words, the processing device 110 includes the acquisition unit 111, the reception unit 112, the determination unit 113, the generation unit 114, and the display control unit 115.

The acquisition unit 111 acquires image data transmitted from the drone 20A via the communication device 130. The image data represents an image Pc (see, for example, Figure 7A) captured by the imaging device 230 of the drone 20A. This image Pc is an image captured in the direction from the first antenna A1 to the second antenna A2. In other words, the acquisition unit 111 acquires the image Pc captured in the direction from the first antenna A1 to the second antenna A2. The acquisition unit 111 acquires the image Pc from the drone 20A via the communication device 130.

The reception unit 112 receives an object distance Dt, which is the distance from a determination target object Ot to the first antenna A1, among the multiple objects O included in the captured image Pc. The determination target object Ot is one of the multiple objects O included in the captured image Pc.

In the first embodiment, the object distance Dt is input by the worker operating the input device 140. The reception unit 112 receives the object distance Dt output from the input device 140. The worker recognizes the object distance Dt, for example, by referring to a map (not shown). This map may be a paper medium, or a map image displayed on the display device 150 (or a display device of an information processing device different from the information processing device 10A). The reception unit 112 also receives input of various parameters.

In the following description, multiple determination target objects Ot may be specified. In such cases, each determination target object Ot will be referred to as determination target object Ot[x] (x is an integer greater than or equal to 1). The object distance Dt corresponding to the determination target object Ot[x] will be referred to as object distance Dt[x]. The Fresnel radius rf at the position of the determination target object Ot[x] will be referred to as Fresnel radius rf[x], and the outer edge of the Fresnel region Fr at the position of the determination target object Ot[x] will be referred to as Fresnel circle Fs[x]. The separation distance Ds between the determination target object Ot[x] and the line of sight Ls will be referred to as separation distance Ds[x]. Separation distance Ds will be described later.

The determination unit 113 determines whether the object to be determined Ot will interfere with wireless communication between the first antenna A1 and the second antenna A2 based on the object distance Dt. More specifically, the determination unit 113 calculates the Fresnel region Fr at the position of the object to be determined Ot based on the object distance Dt. The determination unit 113 then determines whether the object to be determined Ot is located within the Fresnel region Fr at the position of the object to be determined Ot. If the object to be determined Ot is not located within the Fresnel region Fr, the object to be determined Ot will not interfere with the wireless communication network. On the other hand, if the object to be determined Ot is located within the Fresnel region Fr, the object to be determined Ot may interfere with the wireless communication network. Whether the object to be determined Ot will interfere with the wireless communication network is determined based on the shadowing loss L, which is calculated based on the degree of penetration of the object to be determined Ot into the Fresnel region Fr. The method for calculating the shadowing loss L will be described later.

The generation unit 114 generates an image to be displayed on the display device 150. The image generated by the generation unit 114 includes a first image showing the Fresnel circle Sf, which is the outer edge of the Fresnel region Fr corresponding to the object distance Dt, and an image showing the constant angle circle Sd, which will be described later.

The display control unit 115 displays a display image including the image generated by the generation unit 114 and the captured image Pc on the display device 150.

The storage device 120 is a recording medium readable by the processing device 110, and stores multiple programs, including the control program PR1 executed by the processing device 110, and various data used by the processing device 110. The storage device 120 may be composed of at least one of, for example, a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically Erasable Programmable ROM), and a RAM (Random Access Memory). The storage device 120 may also be called a register, cache, or main memory. The control program PR1 may be transmitted from another device via a network such as the Internet.

The communication device 130 is hardware (transmitting/receiving device) for wireless communication with other devices such as the drone 20A. For example, the communication device 130 has one or both of the following functions: communicating with other devices via short-range wireless communication, or communicating with other devices via a mobile communication network or network.

The input device 140 is an input device (e.g., a keyboard, mouse, microphone, switch, button, sensor, etc.) that accepts input from the outside. The display device 150 is a display device (e.g., various display panels such as a liquid crystal display panel or an organic EL display panel) that displays information to the outside. Note that the input device 140 and the display device 150 may be integrated into one structure (e.g., a touch panel).

Figure 4 is a block diagram showing the configuration of drone 20A. Drone 20A includes a processing device 210, a storage device 220, an imaging device 230, a communication device 240, an inertial sensor 250, and a flight mechanism 260.

The processing device 210 is a processor that controls the entire drone 20A and is composed of, for example, one or more chips. The processing device 210 is composed of, for example, a central processing unit (CPU) that includes an interface with peripheral devices, an arithmetic unit, and registers. Note that some or all of the functions of the processing device 210 may be realized by hardware such as a DSP, ASIC, PLD, or FPGA. The processing device 210 executes various processes in parallel or sequentially.

The storage device 220 is a recording medium readable by the processing device 210, and stores multiple programs, including the control program PR2 executed by the processing device 210, and various data used by the processing device 210. The storage device 220 may be composed of at least one of, for example, ROM, EPROM, EEPROM, and RAM. The storage device 220 may also be called a register, cache, main memory, etc.

The imaging device 230 includes, for example, a lens, an image sensor, an image processing engine, etc. The imaging device 230 captures an image of the area around the drone 20A and generates a captured image Pc. Image data representing the captured image is transmitted to the information processing device 10A via the communication device 240. The image captured by the imaging device 230 may be a moving image or a still image. In this embodiment, the imaging device 230 captures a moving image. The on/off setting for imaging by the imaging device 230 (the timing of capturing images in the case of still images) and imaging parameters (for example, imaging magnification or focal length) may be set by the information processing device 10A.

The communication device 240 is hardware (transmission/reception device) for communicating with other devices such as the information processing device 10A and the operation device 30. For example, the communication device 130 has one or both of the following functions: communicating with other devices via short-range wireless communication, or communicating with other devices via a mobile communication network or a network.

The inertial sensor 250 may include an acceleration sensor, a gyro sensor, and a geomagnetic sensor. The inertial sensor 250 detects parameters related to the attitude of the drone 20A and outputs the values of the detected parameters to the processing device 210. The processing device 210 controls the flight mechanism 260 using the parameter values output from the inertial sensor 250.

The flight mechanism 260 includes a propeller and a motor that rotates the propeller. The driving state of the motor of the flight mechanism 260 is controlled by the processing device 210. The processing device 210 controls the driving state of the motor based on operation information received from the operation device 30.

The operation device 30 comprises a controller and a communication device. The controller is an operation device (e.g., a joystick, button, switch, etc.) that accepts operations to specify the position and attitude of the drone 20A. The communication device is hardware (transmission/reception device) for communicating with the communication device 240 of the drone 20A. The operation device 30 generates operation information based on operations on the controller and transmits the operation information to the drone 20A. A display device may be provided on the operation device 30 so that it can display images captured by the imaging device 230 of the drone 20A. In this way, the position and attitude of the drone 20A can be grasped in detail, allowing the drone 20A to be controlled more efficiently.

Next, the processing device 110 of the information processing device 10A will be described in detail. As described above, the processing device 110 includes an acquisition unit 111, a reception unit 112, a determination unit 113, a generation unit 114, and a display control unit 115.

The operation of the information processing device 10A will be described using Figures 5 to 11. Figure 5 is a flowchart showing the processing steps executed by the processing device 110. Figure 6 is a diagram showing an example of the display on the display device 150 of the information processing device 10A. The display image SC1 in Figure 6 displays a captured image display section M0 that displays the captured image Pc captured by the drone 20A, a camera specification display section M1, a transmission path specification display section M2, a measurement specification display section M3, a drawing specification display section M4, a shooting magnification display section M5, a Fresnel radius display section M6, a ridge separation display section M7, a margin display section M8, an image capture button BT1, a fixed angle circle drawing button BT2, a Fresnel drawing button BT3, a separation gauge set button BT4, and a separation calculation button BT5. Details of these are explained in each step of Figure 5.

S11: When the worker inputs various parameters using the input device 140, the processing device 110 functions as the reception unit 112 and receives the various parameters. For example, when the worker positions the cursor on a parameter display area (e.g., one of display areas M1 to M4 in Figure 6) in the display image SC1 and clicks it, the worker can input the parameters displayed in that display area.

Parameters are broadly categorized into camera specifications, transmission path specifications (microroute specifications), measurement specifications, and drawing specifications. Parameters related to the camera specifications are displayed in the camera specification display section M1 of FIG. 6. Parameters related to the camera specifications include the size of the image sensor used in the imaging device 230 and the minimum focal length of the imaging device 230. Parameters related to the transmission path specifications are displayed in the transmission path specification display section M2 of FIG. 6. Parameters related to the transmission path specifications include the frequency band of the microwaves transmitted between the first antenna A1 and the second antenna A2 and the section distance D0 between the first antenna A1 and the second antenna A2. Parameters related to the measurement specifications are displayed in the measurement specification display section M3 of FIG. 6. Parameters related to the measurement specifications include the object distance Dt, which will be described later, and the lens focal length of the lens of the imaging device 230. Parameters related to the drawing specifications are displayed in the drawing specification display section M4 of FIG. 6. Parameters related to the drawing specifications include the constant angle circle angle θ, which will be described later.

S12: In the display image SC1, the captured image display section M0 displays a captured image Pc of the moving image captured by the drone 20A. When the worker presses the image capture button BT1, the processing device 110 functions as the acquisition section 111 and acquires a captured image Pc of the still image. In other words, when the image capture button BT1 is pressed, the acquisition section 111 acquires a portion of the still image that constitutes the moving image as a captured image Pc.

Figure 7A is an enlarged view of the captured image Pc. The captured image Pc shown in Figure 7 shows the second antenna A2 and objects O (O1 to O6). Object O is an object located between the first antenna A1 and the second antenna A2. Specifically, objects O1 to O5 are buildings such as buildings, and object O6 is a power transmission tower. The objects O1 to O6 are closest to the first antenna A1 in the order of O1, O4, O3, O2, O5, and O6. In other words, object O1 is closest to the first antenna A1, and object O6 is farthest from the first antenna A1. To improve the accuracy of subsequent processing, it is preferable to align the center of the captured image Pc with the line of sight Ls connecting the first antenna A1 and the second antenna A2. In other words, it is preferable to align the shooting direction of the imaging device 230 with the line of sight Ls.

S13: When the worker presses the confined circle drawing button BT2, the processing device 110 displays an image on the display device 150 prompting the worker to specify the second antenna A2. The worker specifies the center of the second antenna A2 using a mouse or the like, thereby specifying the coordinates (x1, y1) of the line of sight Ls on the captured image Pc. The processing device 110 then functions as the generation unit 114 and generates image data representing the confined circle Sd. The processing device 110 then functions as the display control unit 115 and displays on the display device 150 a display image in which the image of the confined circle Sd is superimposed on the captured image Pc. Figure 7B is an example of a display image Pd1 in which the image of the confined circle Sd is superimposed on the captured image Pc.

The definite circle Sd is a circle used to primarily determine whether line of sight is achieved on the transmission path. Figure 8 is a diagram showing the definite circle Sd. The definite circle Sd is defined as the set of cross-sectional edges Fd of a right circular cone C whose apex is the center of the lens Le positioned at the position of the first antenna A1 and whose axis is the line of sight Ls. The angle between the line of sight Ls and the generatrix Lb of the right circular cone C is the definite circle angle θ. The definite circle Sd drawn on the captured image Pc, i.e., the definite circle Sd on the image sensor IS, is the result of superimposing projections of the side surfaces of the right circular cone C at all distances Dd on the line of sight Ls. The radius rd of the definite circle Sd on the captured image Pc is determined by the size of the image sensor IS, the minimum focal length of the imaging device 230, the lens focal length at the time of measurement, and the definite circle angle θ. Therefore, if the shooting conditions (size of the image sensor IS, minimum focal length of the imaging device 230, lens focal length at the time of measurement) are constant, the larger the constant circle angle θ, the larger the radius rd of the constant circle Sd.

Figure 9 is a diagram showing a schematic diagram of the relationship between the rated circle Sd and the Fresnel region Fr. Figure 10 is a graph showing the relationship between the Fresnel radius rf and the radius rd of the constant angle circle Sd. More specifically, Figure 10 is a graph in which the line-of-sight angle θf at each point between the first antenna A1 and the second antenna A2 is replaced with the constant angle circle angle θ. Each data series shows the results when the section distance D0 is changed in 1-kilometer increments from 1 km to 12 km. The frequency f of the radio waves transmitted between the antennas is assumed to be 11 GHz.

As shown in Figure 10, regardless of whether the section distance D0 is between 1 km and 12 km, the Fresnel radius rf at each point between the first antenna A1 and the second antenna A2 is smaller than the radius rd of the constant angle circle Sd with a constant angle θ = 1°, except in the immediate vicinity of the first antenna A1.

As a result, as shown in Figure 9, the Fresnel region Fr at each point between the first antenna A1 and the second antenna A2 is included within the confined circle Sd with a confined circle angle θ = 1°. Therefore, in this embodiment, a primary determination of visibility is performed using the confined circle Sd with a confined circle angle θ = 1°. The center of the confined circle Sd on the captured image Pc is defined as coordinates (x1, y1).

As shown in Figure 10, the Fresnel radius rf at a point 300 m or more away from the first antenna A1 is smaller than the radius rd of the constant angle circle Sd with a constant angle θ = 0.5°, regardless of whether the section distance D0 is 1 km to 12 km. Therefore, depending on the measurement conditions, the constant angle θ may be set to 0.5° (or greater than 0.5° but less than 1°).

S14: The worker determines whether any object O other than the second antenna A2 is present inside the fixed circle Sd displayed on the display device 150 and inputs the determination result into the information processing device 10A. As described above, the area surrounded by the fixed circle Sd is larger than the Fresnel region Fr. Therefore, if no object O other than the second antenna A2 is present inside the fixed circle Sd, there is good visibility between the first antenna A1 and the second antenna A2, and no interference with wireless communication occurs. If the determination result indicates that no object O other than the second antenna A2 is present inside the fixed circle Sd (S14: NO), the processing device 110 proceeds to S26. In this way, by having the processing device 110 draw the fixed circle Sd, it is possible to complete the visibility survey with a single determination at locations with good visibility, thereby reducing the processing load on the worker.

S15: If a determination result indicating that an object O exists inside the confined circle Sd is input (S14: YES), the processing device 110 requests the operator to input the object distance Dt. The operator selects the object O that exists inside the confined circle Sd and is closest to the first antenna A1 as the object to be determined Ot[1], and inputs the object distance Dt[1], which is the distance from the object to be determined Ot[1] to the first antenna A1, using the input device 140. The processing device 110 functions as the reception unit 112 and receives the object distance Dt[1].

For example, in the captured image Pc shown in Figure 7B, objects O2 to O6 are contained within the fixed circle Sd. Of these, object O4 is closest to the first antenna A1. Therefore, the object to be determined Ot[1] is object O4. The operator inputs the distance to object O4 as the object distance Dt[1].

S16: When the worker presses the Fresnel drawing button BT3, the processing device 110 functions as the generation unit 114 and generates image data showing the Fresnel circle Sf. Specifically, the generation unit 114 calculates the Fresnel radius rf[1] at the position of the object to be determined Ot[1] using the object distance Dt[1] as the distance Dp in the above equation (1). The Fresnel circle Sf[1] shown in the image data is a circle centered at the coordinates (x1, y1) and having a Fresnel radius rf[1].

The processing device 110 also functions as the display control unit 115, generates a display image Pd2 (Pd2a or Pd2b) by superimposing an image of the Fresnel circle Sf[1] on the captured image Pc, and displays the display image Pd2 on the display device 150. The area inside the Fresnel circle Sf[1] is the Fresnel region Fr. Figures 7C and 7D are examples of a display image Pd2 by superimposing an image of the Fresnel circle Sf[1] on the captured image Pc. In the display image Pd2a shown in Figure 7C, an object O4, which is the object to be determined Ot[1], is present inside the Fresnel circle Sf[1]. In the display image Pd2b shown in Figure 7D, an object O4, which is the object to be determined Ot[1], is not present inside the Fresnel circle Sf[1]. The display control unit 115 displays the display image Pd2 in the captured image display section M0 of the display image SC1 shown in FIG. 6, and also displays the value of the Fresnel radius rf[1] in the Fresnel radius display section M6 of the display image SC1.

S17: The worker determines whether the object to be determined Ot[1] is located inside the Fresnel circle Sf[1] (referred to as "inside the Fresnel circle" in the flowchart) and inputs the determination result to the information processing device 10A. If the input indicates that the object to be determined Ot[1] is not located inside the Fresnel circle Sf[1] (S17: NO), the processing device 110 proceeds to S22.

S18: If it is input that the object to be determined Ot[1] is located inside the Fresnel circle Sf[1] (S17: YES), the processing device 110 calculates the separation distance Ds[1] and the negative margin Mm. More specifically, the processing device 110 functions as the reception unit 112 and receives a separation gauge set for the object to be determined Ot[1]. Specifically, for example, the operator operates the input device 140 to specify the position of the object to be determined Ot[1] on the display image Pd2 that is the shortest distance from the line of sight Ls (coordinates (x1, y1)), thereby specifying coordinates (x2, y2) on the display image Pd2 that indicate the position of the object to be determined Ot[1] that is the shortest distance from the line of sight Ls. This specification of coordinates (x2, y2) corresponds to the separation gauge set.

The processing device 110 calculates the separation distance Ds[1] and the negative margin Mm[1] using the coordinates (x1, y1) and (x2, y2) on the display image and the Fresnel circle Sf[1]. Figure 7E shows the display image Pd3 displaying the coordinates (x1, y1), (x2, y2), the separation distance Ds[1], and the negative margin Mm[1]. The separation distance Ds[1] is the distance between the line of sight Ls and the object to be determined Ot[1]. The margin is the distance between the object to be determined Ot[1] and the Fresnel circle Sf[1]. If the object to be determined Ot[1] is not located inside (outside) the Fresnel circle Sf[1], the margin is a positive value. If the object to be determined Ot[1] is located inside the Fresnel circle Sf[1], the margin is a negative value.

The imaging conditions (camera specifications, imaging magnification, etc.) of the imaging device 230 and the object distance Dt[1] to the object to be determined Ot[1] are known. Therefore, the processing device 110 can convert the distance between the coordinates (x1, y1) and (x2, y2) on the display image into the separation distance Ds[1] in real space. The processing device 110 can also convert the distance between the coordinates (x2, y2) on the display image and the position of the Fresnel circle Sf[1] closest to the coordinates (x2, y2) into a negative margin Mm[1] in real space. The negative margin Mm[1] can also be calculated by subtracting the separation distance Ds[1] from the Fresnel radius rf[1] (Mm = rf - Ds).

The processing device 110 then functions as the display control unit 115 and displays the calculation results on the display device 150. More specifically, the separation distance Ds[1] is displayed in the ridge separation display area M7 of the display image SC1 shown in FIG. 6, and the value of the negative margin Mm is displayed in the margin display area M8 of the display image SC1 shown in FIG. 6. The display control unit 115 also displays the display image Pd3 in the captured image display area M0 of the display image SC1 shown in FIG. 6.

S19: The processing device 110 functions as the determination unit 113 and estimates the impact of the determination target object Ot[1] on communication based on the degree of overlap between the Fresnel circle Sf[1] and the determination target object Ot[1]. For example, the determination unit 113 estimates the impact of the determination target object Ot[1] on communication by calculating the received power Pe at the first antenna A1.

Specifically, the determination unit 113 calculates the area Ns[1] of the overlap between the determination target object Ot[1] and the Fresnel region Fr[1] on the captured image Pc. The determination unit 113 calculates the shadowing loss L[1] caused by the determination target object Ot[1] using the following formula (2) from the ratio of the area Ns[1] to the area Nf[1] within the Fresnel region Fr[1] at the position of the determination target object Ot[1]. In the following formulas (2) to (5), each parameter is generalized using x.

L[x] = 10*log(Nf[x]/(Nf[x]-Ns[x]))...(2)

The range of the determination target object Ot[1] on the captured image Pc is identified, for example, by the operator using the input device 140 to trace the edge portion of the determination target object Ot[1] on the captured image Pc. The processing device 110 may also automatically extract the edge of the determination target object Ot[1] on the captured image Pc.

The determination unit 113 also calculates the free space loss Ld[D0], which corresponds to the section distance D0 between the first antenna A1 and the second antenna A2, using the following formula (3):

Ld[D0] = 10*log(4*π*D0*f/c) ² ...(3)

The determination unit 113 calculates the received power Pe at the first antenna A1 using the following equation (4). In the following equation (4), Pt is the transmitted power, G1 is the antenna gain of the first antenna A1, and G2 is the antenna gain of the second antenna A2.

Pe = Pt+G1+G2-Ld[D0]-L[x]... (4)

If there are multiple objects to be determined Ot located inside the Fresnel circle Sf, the shielding loss L[x] corresponding to each object to be determined Ot[x] is integrated. That is, the received power Pe is calculated using the following formula (5).

Pe = Pt+G1+G2-Ld[D0]-ΣL[x]... (5)

S20: The processing device 110 functions as the determination unit 113 and determines whether the impact of the determination target object Ot[1] on communication is within an acceptable range. In other words, the determination unit 113 determines whether the determination target object Ot will interfere with wireless communication between the first antenna A1 and the second antenna A2 based on the object distance Dt received by the reception unit 112. For example, the determination unit 113 determines whether the received power Pe at the first antenna A1 is equal to or greater than a predetermined minimum received power Pmin. If the received power Pe is equal to or greater than the minimum received power Pmin, the determination unit 113 determines that the impact of the determination target object Ot[1] on communication is within an acceptable range (S20: YES). The processing device 110 then proceeds to S23.

S21: If the received power Pe is less than the minimum received power Pmin, the determination unit 113 determines that the impact of the determination target object Ot[1] on communication exceeds the allowable range (S20: NO). The processing device 110 functions as the generation unit 114 and generates a determination image indicating that the determination target object Ot[1] will interfere with communication. Specifically, it generates a determination image indicating that there may be a problem with the communication quality between the first antenna A1 and the second antenna A2. The processing device 110 then functions as the display control unit 115 and displays on the display device 150 a determination image indicating that there may be a problem with the communication quality, and ends the processing of this flowchart.

S22: If the determination target object Ot[1] is not located inside the Fresnel circle Sf[1] in S17 (S17: NO), the processing device 110 calculates the positive margin Mp[1] using the coordinates (x2, y2) on the display image and the Fresnel circle Sf[1]. The method for calculating the positive margin Mp[1] is the same as the method for calculating the negative margin Mm[1]. Figure 7F shows a display image Pd4 displaying the positive margin Mm[1]. The processing device 110 functions as the display control unit 115 and displays the calculation result on the display device 150. More specifically, the value of the positive margin Mp[1] is displayed in the margin display area M8 of the display image SC1 shown in Figure 6. The display control unit 115 also displays the display image Pd4 in the captured image display area M0 of the display image SC1 shown in Figure 6.

S23: The worker determines whether there is an object O other than the object to be determined Ot[1] and the second antenna A2 inside the Fresnel circle Sf[1]. If there is no object other than the object to be determined Ot[1] and the second antenna A2 inside the Fresnel circle Sf[1] (S23: NO), the processing device 110 proceeds to S26. Note that if the processing reaches S23 via S17: NO, the object to be determined Ot[1] is not inside the Fresnel circle Sf[1], so the worker determines whether there is an object O other than the second antenna A2 inside the Fresnel circle Sf[1].

S24: If an object O other than the determination target object Ot[1] and the second antenna A2 is present inside the Fresnel circle Sf[1] (S23: YES), the worker sets the object O that is next closest to the first antenna A1 after the determination target object Ot[1] among the objects O inside the Fresnel circle Sf[1] as the new determination target object Ot[2]. For example, in the case of the display image Pd3 shown in Figure 7E, the worker sets object O3 as the new determination target object Ot[2].

S25: When the operator inputs the object distance Dt[2] from the new object to be determined Ot[2] to the first antenna A1 using the input device 140, the processing device 110 functions as the reception unit 112 and receives the object distance Dt[2]. The processing device 110 then returns the process to S16. In S16, a new Fresnel circle Sf[2] is generated according to the object distance Dt[2] of the new object to be determined Ot[2]. That is, the processing device 110 repeatedly receives the object distance Dt and repeats the determination until there are no more objects located inside the Fresnel circle Sf and between the first antenna A1 and the second antenna A2.

S26: If it is determined in S14 that no object O other than the second antenna A2 exists inside the fixed angle circle Sd, or if it is determined in S23 that no object other than the determination target object Ot and the second antenna A2 exists inside the Fresnel circle Sf, the processing device 110 functions as the generation unit 114 and generates a determination image indicating that there is no problem with the communication quality between the first antenna A1 and the second antenna A2. Then, the processing device 110 functions as the display control unit 115 and displays on the display device 150 a determination image indicating that there is no possibility of a problem with the communication quality, and the processing of this flowchart ends.

In the flowchart described above, the determination unit 113 determines whether a problem will occur in communication quality based on whether the received power Pe is equal to or greater than the minimum received power Pmin (S19 and S20). This process is not limited to this. The determination unit 113 may immediately determine that a problem may occur in communication quality if a determination result indicating that the object to be determined Ot[1] is located inside the Fresnel circle Sf[1] is input in S17 of FIG. 5. In this case, if it is determined in S17 that the object to be determined Ot is located inside the Fresnel circle Sf[1] (S17: YES), the processing device 110 proceeds to S22.

As explained above, if the determination unit 113 determines that the object O is next closest to the first antenna A1 after the determination target object Ot inside the Fresnel circle Sf (S20: NO), the reception unit 112 determines that object O as the new determination target object Ot (S24) and receives the object distance Dt to the new determination target object Ot (S25). The reception unit 112 then repeats reception, and the determination unit 113 repeats determination, until there are no more objects O located inside the Fresnel circle Sf and between the first antenna A1 and the second antenna A2.

Figure 11 is a diagram showing a schematic diagram of the relationship between the Fresnel circle Sf and the line of sight angle θf. As in Figure 1, point P is a point on the line of sight Ls at a distance Dp from the first antenna A1. The line of sight angle θf corresponding to the Fresnel circle Sf at point P is always smaller than the line of sight angle θf corresponding to the Fresnel circle Sf at a point on the line of sight Ls closer to the first antenna A1 than point P (e.g., points p1 and p2). Therefore, if there is no object O located farther than the object to be determined Ot inside the Fresnel circle Sf at the position of the object to be determined Ot, it can be determined that the communication quality in the section farther from the object to be determined Ot is good.

As described above, in the first embodiment, of the objects O that appear within the fixed angle circle or the Fresnel circle Sf, the objects O closest to the first antenna A1 are selected as the object to be determined Ot. In other words, the information processing device 10A can reduce the processing load associated with the visibility check and shorten the processing time required for the visibility check, compared to when an object O that appears within the fixed angle circle in the captured image is simply selected as the object to be determined Ot.

In addition, in the first embodiment, the processing device 110 calculates the Fresnel radius rf at the position of the object to be determined Ot using the object distance Dt input by the operator. This processing simplifies the configuration of the determination system 1 compared to calculating the object distance Dt by the processing device 110.

In addition, in the first embodiment, an imaging device 230 is mounted on the drone 20A, and the drone 20A is flown to the position of the first antenna A1 to capture images. This configuration reduces the burden on workers during visibility surveys compared to when workers carry an imaging device and a transit vehicle, etc., and perform work at the first antenna A1.

2. Second Embodiment In the first embodiment, the worker determines whether or not the object O is located inside the definite circle or the Fresnel circle. Furthermore, in the first embodiment, the worker inputs the object distance Dt to the object Ot to be determined. Meanwhile, in the second embodiment, the determination of whether or not the object O is located inside the definite circle or the Fresnel circle and the input of the object distance Dt to the object Ot to be determined are performed by the information processing device 10B. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and detailed description thereof will be omitted.

Figure 12 is a block diagram showing the configuration of information processing device 10B, and Figure 13 is a block diagram showing the configuration of drone 20B. The determination system 1 of the second embodiment uses information processing device 10B instead of information processing device 10A, and drone 20B instead of drone 20A.

Instead of the imaging device 230, the drone 20B is equipped with a first imaging device 230A and a second imaging device 230B. The first imaging device 230A outputs first captured image data representing the first captured image. The second imaging device 230B outputs second captured image data representing the second captured image. The first imaging device 230A and the second imaging device 230B are fixed to the drone 20B, separated by a predetermined distance. The optical axis of the first imaging device 230A and the optical axis of the second imaging device 230B are parallel. Therefore, the set of the first captured image and the second captured image constitutes a so-called stereo image. The first captured image data and the second captured image data are transmitted to the information processing device 10B via the communication device 240.

Information processing device 10B differs from information processing device 10A in that it includes an identification unit 116 and a distance calculation unit 117.

The identification unit 116 identifies the order in which one or more objects O located inside a fixed angle circle or a Fresnel circle overlap based on the first captured image and the second captured image, and identifies a new object to be determined Ot[x] based on the order.

The distance calculation unit 117 calculates the object distance Dt[x], which is the distance from the object to be determined Ot[x] to the first antenna A1, based on the first captured image and the second captured image, and inputs the calculated object distance Dt[x] to the reception unit 112.

Figure 14 is a flowchart showing the processing steps executed by the processing device 110. In the following explanation, steps that are the same as those in the flowchart of the first embodiment shown in Figure 5 are assigned the same step numbers as in Figure 5, and their explanations will be omitted.

S12A: When the worker presses the image capture button BT1 (see Figure 6), the processing device 110 functions as the acquisition unit 111 and acquires captured images. At this time, the acquisition unit 111 acquires first captured image data representing the first captured image and second captured image data representing the second captured image. The first captured image and second captured image are stereo images captured at the same time by the first imaging device 230A and the second imaging device 230B, respectively.

S12B: The processing device 110 identifies an object appearing in the captured image. For example, the processing device 110 extracts edges contained in the captured image through image processing, and identifies the object O appearing in the captured image.

S14A: The processing device 110 determines whether an object O other than the second antenna A2 is present inside the confined circle Sd. The processing device 110 identifies the second antenna A2 from among the objects O appearing in the captured image Pc, for example, by pattern matching. If an object other than the second antenna A2 is located inside the confined circle Sd, the processing device 110 determines that an object O other than the second antenna A2 is present inside the confined circle Sd (S14: YES). Furthermore, if no object other than the second antenna A2 is located inside the confined circle Sd, the processing device 110 determines that no object O other than the second antenna A2 is present inside the confined circle Sd (S14: NO).

S15A: If an object O other than the second antenna A2 is present inside the confined circle Sd (S14A: YES), the processing device 110 functions as the identification unit 116 and identifies the object O to be determined Ot[1], which is the object O closest to the first antenna A1, among the objects O located inside the confined circle Sd. Specifically, the processing device 110 identifies the order in which one or more objects O located inside the confined circle Sd overlap, and identifies the object Ot[1] to be determined based on the order.

S15B: The processing device 110 functions as the distance calculation unit 117 and calculates the object distance Dt[1] from the determination target object Ot[1] to the first antenna A1. As described above, the first captured image and the second captured image are stereo images, so the distance calculation unit 117 can calculate the depth position of the object O shown in the captured image (the distance from the first image capture device 230A and the second image capture device 230B). Therefore, in the second embodiment, the worker does not need to refer to a map to input the object distance Dt[1], improving work efficiency.

Note that depending on the arrangement of the objects O within the definite circle Sd, it may be difficult to identify the determination target object Ot[1] based solely on the order in which the objects O overlap. In this case, the processing device 110 may function as the distance calculation unit 117 in S15A, calculate the distance to the object O located inside the definite circle Sd, and then function as the identification unit 116 to identify the determination target object Ot[1].

S17A: The processing device 110 determines whether the object to be determined Ot[1] is located inside the Fresnel circle Sf[1]. Specifically, for example, if the entire portion of the captured image corresponding to the object to be determined Ot[1] identified in S15A is located outside the Fresnel circle Sf[1], the processing device 110 determines that the object to be determined Ot[1] is not located inside the Fresnel circle Sf[1]. On the other hand, if even a portion of the captured image corresponding to the object to be determined Ot[1] is located inside the Fresnel circle Sf[1], the processing device 110 determines that the object to be determined Ot[1] is located inside the Fresnel circle Sf[1].

S18A: If the object to be determined Ot[1] is located inside the Fresnel circle Sf[1] (S17: YES), the processing device 110 calculates the separation distance Ds[1] and the negative margin Mm[1]. Specifically, for example, the processing device 110 identifies, among the edges of the object to be determined Ot[1] extracted from the captured image, the position at which the distance from the line of sight Ls (coordinates (x1, y1)) is the smallest as coordinates (x2, y2), and calculates the separation distance Ds[1] and the negative margin Mm[1]. Therefore, in the second embodiment, the operator does not need to specify the position at which the distance from the line of sight Ls is the smallest among the edges of the object to be determined Ot[1].

S23A: The processing device 110 determines whether an object O other than the object to be determined Ot[1] and the second antenna A2 is located inside the Fresnel circle Sf[1]. This determination can be made, for example, by replacing the fixed angle circle Sd with the Fresnel circle Sf[1] in the description of S14A above. Note that if the process reaches S23A via S17A: NO, the object to be determined Ot[1] is not located inside the Fresnel circle Sf[1], and the processing device 110 determines whether an object O other than the second antenna A2 is located inside the Fresnel circle Sf[1].

S24A: If an object O other than the determination target object Ot[1] and the second antenna A2 is located inside the Fresnel circle Sf[1] (S24A: YES), the processing device 110 functions as the identification unit 116 and identifies the object O that is next closest to the first antenna A1 after the determination target object Ot[1] as the new determination target object Ot[2]. The identification method is the same as in S15A.

S25A: The processing device 110 functions as the distance calculation unit 117 and calculates the object distance Dt[2] from the new determination target object Ot[2] to the first antenna A1. The calculation method is the same as in S15B. Therefore, the operator does not need to refer to a map and input the object distance Dt[2].

As described above, in the information processing device 10B, the processing device 110 determines the order in which objects O located inside the Fresnel circle Sf overlap based on the captured image, and determines a new object to be determined Ot based on the order. This process eliminates the need for the operator to specify the object to be determined Ot, thereby reducing the workload on the operator. It also eliminates the waiting time of the processing device 110 until the operator specifies the object to be determined Ot, thereby reducing processing time.

Furthermore, in the information processing device 10B, the processing device 110 calculates the object distance Dt to the object to be determined Ot based on the first captured image and the second captured image, and calculates the Fresnel radius rf at the position of the object to be determined Ot using the calculated distance. This process eliminates the need for the operator to specify the object distance Dt, thereby reducing the workload on the operator. Furthermore, it is possible to eliminate the waiting time of the processing device 110 until the operator specifies the object distance Dt, thereby reducing processing time.

In other words, in the second embodiment, the judgments and parameter input required by the worker can be omitted. Therefore, in the second embodiment, the work efficiency of forecast surveys can be further improved compared to the first embodiment.

3. Modification (1) In the second embodiment, the information processing device 10B calculates the object distance Dt using the first captured image and the second captured image, but the operator may input the object distance Dt, as in the first embodiment. Also, in the second embodiment, the information processing device 10B identifies the object O closest to the first antenna A1 as the determination target object Ot[1], but the operator may identify the determination target object Ot, as in the first embodiment.

(2) In the information processing device 10B, the generation unit 114 may generate an identification image in the captured image that distinguishes a new determination target object Ot (for example, determination target object Ot[2] in the flowchart of FIG. 14) from other objects O. The identification image is, for example, an image that shows the outline of the new determination target object Ot. The identification image is also an example of a second image. The display control unit 115 may also display on the display device 150 an image in which an image showing the Fresnel circle Sf and the identification image are superimposed on the captured image. This process allows the operator to confirm which object O has been identified as the new determination target object Ot, thereby improving the accuracy of visibility surveys using the information processing device 10B.

4. Other (1) In the above-described embodiments, the storage devices (e.g., storage devices 120 and 220) are recording media readable by the processing devices (e.g., processing devices 110 and 210). While ROM and RAM are exemplified, other suitable storage media may be used, such as flexible disks, magneto-optical disks (e.g., compact disks, digital versatile disks, Blu-ray (registered trademark) disks), smart cards, flash memory devices (e.g., cards, sticks, key drives), CD-ROMs (Compact Disc-ROMs), registers, removable disks, hard disks, floppy (registered trademark) disks, magnetic strips, databases, servers, and other suitable storage media. The program may also be transmitted from a network via a telecommunications line. The program may also be transmitted from a communications network via a telecommunications line.

(2) In the above-described embodiments, the described information, parameters, etc. may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

(3) In the above-described embodiment, input and output information may be stored in a specific location (e.g., memory) or may be managed using a management table. Input and output information may be overwritten, updated, or added to. Output information may be deleted. Input information may be sent to another device.

(4) In the above-described embodiment, the determination may be made based on a value represented by one bit (0 or 1), a Boolean value (true or false), or a comparison of numerical values (e.g., comparison with a predetermined value).

(5) The order of the process procedures, sequences, flowcharts, etc. illustrated in the above-described embodiments may be rearranged as long as it is consistent. For example, the methods described in this disclosure present elements of various steps using an exemplary order, and are not limited to the particular order presented.

(6) Each function illustrated in Figures 3, 4, 12, and 13 is realized by any combination of hardware and/or software. Furthermore, there are no particular limitations on how each functional block is realized. That is, each functional block may be realized using a single device that is physically or logically coupled, or may be realized using two or more physically or logically separated devices that are connected directly or indirectly (e.g., via wire, wirelessly, etc.) and these multiple devices. A functional block may also be realized by combining software with the single device or multiple devices.

Furthermore, communication devices 130 and 240 are hardware (transmission/reception devices) for communicating between computers via at least one of a wired network and a wireless network, and are also referred to as, for example, a network device, network controller, network card, or communication module. Communication devices 130 and 240 may be configured to include, for example, high-frequency switches, duplexers, filters, frequency synthesizers, etc. to realize at least one of frequency division duplex (FDD) and time division duplex (TDD).

(7) The programs exemplified in the above-described embodiments should be broadly interpreted to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., regardless of whether software is called software, firmware, middleware, microcode, hardware description language, or by other names.

Software, instructions, information, etc. may also be transmitted and received via a transmission medium. For example, if software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and/or wireless technologies (such as infrared, microwave), then these wired and/or wireless technologies are included within the definition of transmission media.

(8) In each of the above embodiments, the terms "system" and "network" are used interchangeably.

(9) The information, parameters, etc. described in this disclosure may be expressed using absolute values, relative values from a predetermined value, or other corresponding information. For example, radio resources may be indicated by an index. The names used for the parameters described above are not limiting in any way. Furthermore, mathematical formulas, etc. using these parameters may differ from those explicitly disclosed in this disclosure. Various channels (e.g., PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not limiting in any way.

(10) In the above embodiments, the phrase "based on" does not mean "based only on," unless otherwise specified. In other words, the phrase "based on" means both "based only on" and "based at least on."

(11) Any reference to elements using designations such as "first," "second," etc. used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must in some way precede the second element.

(12) When the terms "include," "including," and variations thereof are used in this disclosure, these terms are intended to be inclusive, similar to the term "comprising." Furthermore, when the term "or" is used in this disclosure, it is not intended to be an exclusive or.

(13) In this disclosure, where articles are added by translation, such as a, an, and the in English, this disclosure may include the noun following these articles being plural.

(14) In this disclosure, the term "A and B are different" may mean "A and B are different from each other." Note that this term may also mean "A and B are each different from C." Terms such as "separate" and "combined" may also be interpreted in the same way as "different."

(15) Each aspect/embodiment described in this disclosure may be used alone, in combination, or switched depending on the implementation. Furthermore, notification of specified information (e.g., notification that "X is true") is not limited to being done explicitly, but may also be done implicitly (e.g., by not notifying the specified information).

Although the present disclosure has been described in detail above, it will be clear to those skilled in the art that the present disclosure is not limited to the embodiments described herein. The present disclosure can be implemented in modified and altered forms without departing from the spirit and scope of the present disclosure, which are defined by the claims. Therefore, the description of the present disclosure is intended to be illustrative and does not have any limiting meaning on the present disclosure.

1...Determination system, 10A, 10B...Information processing device, 20A, 20B...Drone, 30...Operation device, 110...Processing device, 111...Acquisition unit, 112...Reception unit, 113...Determination unit, 114...Generation unit, 115...Display control unit, 116...Identification unit, 117...Distance calculation unit, 120...Storage device, 130...Communication device, 140...Input device, 150...Display device, 210...Processing device, 220...Storage device, 230...Photography Imaging device, 230A...first imaging device, 230B...second imaging device, 240...communication device, 250...inertial sensor, 260...flight mechanism, A1...first antenna, A2...second antenna, B1...first wireless station, B2...second wireless station, D0...section distance, Dt...object distance, Fr...Fresnel region, Fs...Fresnel circle, O...object, Ot...object to be determined, Sf...Fresnel circle, rf...Fresnel radius, θf...line of sight angle.

Claims (6)

an acquisition unit that acquires a captured image captured in a direction from the first antenna toward the second antenna;
a reception unit that receives a distance from a determination target object among a plurality of objects included in the captured image to the first antenna;
a determination unit that determines whether the object to be determined will interfere with wireless communication between the first antenna and the second antenna based on the distance received by the reception unit;
a generating unit that generates a first image showing a Fresnel circle that is an outer edge of a Fresnel area corresponding to the distance received by the receiving unit;
a display control unit that displays a display image including the first image and the captured image on a display device,
when the determination result of the determination unit is negative and an object that is next closest to the first antenna after the object to be determined is present inside the Fresnel circle, the reception unit regards the object as a new object to be determined and receives a distance to the new object to be determined;
the reception unit repeats reception and the determination unit repeats determination until there is no object located inside the Fresnel circle and between the first antenna and the second antenna.
Information processing device. an input device for an operator to input the distance;
the receiving unit receives the distance output from the input device;
The information processing device according to claim 1 . the captured images include a first captured image captured by a first imaging device and a second captured image captured by a second imaging device spaced a predetermined distance from the first imaging device,
a distance calculation unit that calculates a distance from the determination target object to the first antenna based on the first captured image and the second captured image, and inputs the calculated distance to the reception unit;
The information processing device according to claim 1 . an identification unit that identifies an order in which one or more objects located inside the Fresnel circle overlap based on the captured image, and identifies the new determination target object based on the order;
The information processing device according to claim 1 . the generation unit generates a second image in the captured image that distinguishes the new determination target object from other objects;
the display control unit displays, on the display device, a display image including an image in which the first image and the second image are superimposed on the captured image.
The information processing device according to claim 4 . a communication device for wireless communication with the aircraft;
the acquisition unit acquires the captured image from the aircraft via the communication device.
The information processing device according to claim 1 .