JP6864528B2 - Stealth reduction area notification system, stealth reduction area notification method and program - Google Patents

Description

The present invention relates to a stealth reduction region notification system, a stealth reduction region notification method and a program.

There is a technology for detecting an object by mounting a radar device or the like on an aircraft, a vehicle, a ship, or the like. This technology is used, for example, in a situation where a surveillance ship irradiates a radar toward the sea and the reflected waves are used to monitor whether or not another ship is present in the surrounding area. In addition, the ship to be monitored also has a detection system such as radar, and monitors other ships and the like existing in the vicinity so that it cannot be found by the monitoring ship. In such a situation, the surveillance ship and the ship to be monitored are devised to improve stealth so that they are not detected by radar or the like.

Patent Document 1 describes an active target search and tracking method that searches for and tracks a target by a reflected wave against an electromagnetic wave radiated by itself, and a passive target search and tracking method that detects an electromagnetic wave radiated by the target and calculates the direction of the target. There is a description about the technology to keep the detectability low by combining with and as short as possible to use the active target search and tracking method.

Japanese Unexamined Patent Publication No. 11-281738

By the way, although technologies for improving the stealth of the own ship and improving the detection performance of the object are provided (for example, Patent Document 1), how close the own ship can be to the object. For example, there is no technology provided to know if it is detected from the object. Therefore, for example, in the above-mentioned surveillance ship, the crew must operate the surveillance ship without knowing how close to the monitoring target is allowed.

Therefore, an object of the present invention is to provide a stealth reduction region notification system, a stealth reduction region notification method, and a program that can solve the above-mentioned problems.

The first aspect of the present invention is a self-moving body stealth characteristic setting unit that sets information indicating the stealth characteristics of the self-moving body, and an object detection characteristic setting that sets information indicating the characteristics of the object's detection ability. and parts, on the basis on the characteristic properties and the detection capacity for stealth, a region indicating a range of the position as detected by the own mobile body is the object and the object to its position exists It is a stealth reduction area notification system including a detection range calculation unit for calculation and a notification unit for notifying the result of the calculation.

The stealth reduction region notification system according to the second aspect of the present invention further includes an object position setting unit for setting the position information of one or more objects, and the detection range calculation unit further includes the object position calculation unit. the position information of one or more objects, based on the characteristics of the detection capabilities of each of the object, to calculate the said area the own mobile body is detected by the object.

The stealth reduction region notification system according to the third aspect of the present invention includes another mobile body position setting unit that sets position information about another mobile body that moves together with the self-moving body, and stealth of the other mobile body. The other mobile stealth characteristic setting unit for setting the characteristics related to the sex is further provided, and the detection range calculation unit further includes the characteristics related to the stealth property of the other mobile body and the characteristics of the detection ability. the area was calculated for other mobile body is detected by the object, wherein the notification unit notifies the area in which the other mobile body is detected by the object.

The stealth reduction region notification system according to the fourth aspect of the present invention switches and sets the stealth-related characteristics of the self-moving object between a normal mode and a deception mode for the purpose of deception of the object. It also has a normal setting unit.

The stealth reduction region notification system according to the fifth aspect of the present invention further includes a selection reception unit that accepts the selection of the object from the predetermined choices of the object, and the detection range calculation unit includes the detection range calculation unit. , calculates the area which is the detection by using the information showing the characteristics of the detection capability of the pre-recorded the object in association with the object selected.

A sixth aspect of the present invention includes a step of setting information indicating the stealth property of the self-moving body, a step of setting information indicating the characteristic of the detection ability of the object, and the stealth property and the detection. based on the characteristics of the capabilities, the steps of the self-moving body and the object at that position exists to calculate the area indicating the range of the position as detected by the object, notifies the result of the calculation It is a stealth reduction area notification method having a step to be performed.

A seventh aspect of the present invention is a means for setting a computer included in the stealth reduction region notification system to set information indicating the characteristics of the stealth of the self-moving object, and a means for setting information indicating the characteristics of the detection ability of an object. , on the basis on the characteristic properties and the detection capacity for stealth, calculates an area indicating a range of the position as detected by the own mobile body is the object and the object to its position exists It is a program for functioning as a means, a means for notifying the result of the calculation.

According to the present invention, it is possible to grasp how close a moving body can be to an object.

It is a block diagram which shows an example of the stealth reduction area notification system of this invention. It is the first figure explaining the function of the stealth reduction area notification system of this invention. It is a 2nd figure explaining the function of the stealth reduction area notification system of this invention. It is a flowchart which shows an example of the processing of the stealth reduction area notification system of this invention. It is a figure which shows an example of the hardware configuration of the stealth reduction area notification system of this invention.

<Embodiment>
Hereinafter, the stealth reduction region notification system according to the embodiment of the present invention will be described with reference to FIGS. 1 to 5.
FIG. 1 is a block diagram showing an example of the stealth reduction region notification system of the present invention.
The stealth reduction area notification system 10 has a detection capability of a moving object such as a ship, a submersible, a vehicle, an aircraft, or various flying objects, which is required to have stealth property, with respect to an object having a detection ability. It is a system that calculates and notifies how close it can be without being detected by. The stealth reduction area notification system 10 may be mounted on a moving body such as a ship that requires stealth, or another system that instructs the ship or the like in the direction of travel or the distance traveled, or controls the ship or the like. It may be installed in a place (command room, etc.). The object is, for example, an aircraft, a ship, a submarine, a missile, a torpedo, a mine, a land radar, an underwater sonar, etc. that poses a threat to a self-moving object (own ship, etc.). The stealth reduction area notification system 10 is composed of, for example, one computer or the like.

As shown in FIG. 1, the stealth reduction region notification system 10 includes a self-moving body stealth characteristic setting unit 101, a self-moving body position setting unit 102, another moving body stealth characteristic setting unit 103, and another moving body position setting unit. 104, object detection characteristic setting unit 105, object position setting unit 106, deception / normal setting unit 107, detection range calculation unit 108, display control unit 109, input / output unit 110, and communication unit 111. And a storage unit 112.

The self-moving body stealth characteristic setting unit 101 sets information indicating the stealth property-related characteristics of the self-moving body. The self-moving body is a moving body for which the stealth reduction region notification system 10 calculates a distance that can be approached without being detected by an object. The characteristics related to stealth are electromagnetic waves (visible rays, infrared rays, radio waves, etc.) and sound waves emitted from the self-moving body, or electromagnetic waves and sound waves emitted by the object reflected by the collision with the self-moving body. Information that indicates the ease of detection (or the difficulty of detection) when detected by an object detection system. For example, when the detection system is a radar, the stealth property is the radar cross section (RCS). The self-moving body stealth characteristic setting unit 101 acquires, for example, the RCS of the self-moving body, and records the value in the storage unit 112 as a characteristic related to the stealth property of the self-moving body.

The self-moving body position setting unit 102 sets the position information of the self-moving body. For example, when the self-moving body is a ship, the self-moving body position setting unit 102 acquires the latitude and longitude of the position where the own ship exists and records it in the storage unit 112 as the position information of the own ship.

The other mobile stealth characteristic setting unit 103 sets information indicating the stealth characteristics of the other mobile. Other mobiles are mobiles that act with their own mobiles. For example, in the case of a ship, it often acts as a unit of a fleet composed of multiple ships. In such a case, the other mobile stealth characteristic setting unit 103 acquires the RCS of all other ships (other mobiles) constituting the fleet, associates each RCS with the identification information of each ship, and others. It is recorded in the storage unit 112 as a characteristic related to the stealth property of the moving body.

The other moving body position setting unit 104 sets the position information of the other moving body. For example, when the other moving body is a ship, the other moving body position setting unit 104 acquires the latitude and longitude of the position where all the other ships exist, and associates the other moving body with the identification information of each ship. It is recorded in the storage unit 112 as the position information of.

The object detection characteristic setting unit 105 sets information indicating the characteristics of the detection ability of the detection system possessed by the object. The detection system is, for example, a radar, a sonar, or the like. The object is equipped with a radar, sonar, etc. for positioning its own position and detecting obstacles and the like existing in the surroundings. In this case, the characteristics of the detection capability are the frequency, output, and the like of electromagnetic waves and sound waves radiated by the detection system such as radar and sonar. The object detection characteristic setting unit 105 acquires, for example, information such as radar frequency and output, and records it in the storage unit 112 as a characteristic of the detection ability.

The object position setting unit 106 sets the position information of the object. For example, when the object is a ship, the object position setting unit 106 acquires the latitude and longitude of the position where the target ship exists and records it in the storage unit 112 as the position information of the object. Further, for example, when the object is a radar device on land, the object position setting unit 106 acquires the latitude, longitude, and altitude of the position where the radar device is installed, and records the position information of the object in the storage unit 112. To do.

The deception / normal setting unit 107 sets the stealth characteristics of the self-moving body and other moving bodies by switching between the normal mode and the deception mode. The normal mode is a method in which, for example, a self-moving body or the like reflects the radar or the like emitted from the object as it is. The deception mode is a method of emitting a false reflected wave with a higher transmission power than the normal mode, for the purpose of preventing the object from recognizing accurate information of the self-moving object. In the deception mode, the reflected wave radiated with a higher transmission power than usual causes the object to mistakenly recognize that the self-moving body is a larger moving body than it actually is. Ships and fighters are often equipped with a deception device for the purpose of deceiving the actual position of the self-moving body, and the deception / normal setting unit 107 is such that the self-moving body operates the deception device. To calculate how close you can get to the object, both when and not, switch between normal mode and deception mode.

The detection range calculation unit 108 calculates the region in which the self-moving object is detected by the object based on the stealth characteristics of the self-moving object and the characteristics of the detecting ability of the object. Further, the detection range calculation unit 108 calculates the region in which the other moving object is detected by the object based on the stealth characteristics of the other moving object and the characteristic of the detecting ability of the object.

The display control unit 109 generates image data including contents to be displayed on the display connected to the stealth reduction area notification system 10. An example of the image generated by the display control unit 109 will be described next with reference to FIG.

The input / output unit 110 receives input of instruction information or the like to the stealth reduction area notification system 10 by the operator. In addition, the input / output unit 110 outputs image data indicating a region (stealth reduction region) in which the self-moving object can be detected by the object to the display.
The communication unit 111 communicates with another device. For example, the communication unit 111 can receive various setting information such as information indicating the characteristics related to the stealth property of the self-moving body from an external device via the network. Alternatively, the communication unit 111 can transmit the image data generated by the display control unit 109 to another device.
The storage unit 112 stores various information necessary for calculating the stealth reduction region. The storage unit 112 may be a storage device built in the stealth reduction area notification system 10 or an external storage device (for example, a data center or the like).

FIG. 2 is a first diagram illustrating the function of the stealth reduction region notification system of the present invention.
FIG. 2 shows an example of the display screen 20 which is the image data generated by the display control unit 109. As shown, the display screen 20 includes an object setting area 21 and a stealth reduction area notification area 22.
A plurality of areas are provided in the object setting area 21. The plurality of areas can be switched by selecting tabs 211 to 214. Hereinafter, the area displayed when the tab 211 is selected is described as the area 211. The regions 211 to 214 are each classified according to the type of the object. The area 211 displayed as "AIR" on the tab is an area selected when the object is a flying object such as an aircraft. The area 212 labeled "SURF" on the tab is the area selected when the object is a surface boat such as a ship. The area 213 displayed as "SUB" on the tab is an area selected when the object is a submarine such as a submarine. The area 214 displayed as "LAND" on the tab is an area selected when the object is equipment installed on land such as a land radar, a vehicle moving on land, or the like.

FIG. 2 shows an example of the region 211. In the area 211, the options of the objects in which the flying objects are further classified and embodied are displayed. For example, the region 211 is provided with an AEW region 211a, a Fighter region 211b, and an MSL region 211c. Further, for example, in the AEW area 211a, options such as specific model names "A-7" and "A-31" when the object is an airborne early warning (AEW) are displayed. There is. Similarly, in the Fighter area 211b and the MSL area 211c, specific model names of fighter aircraft and missiles are displayed as object options. These options are classified according to the type of the object and recorded in advance in the storage unit 112. For example, the model name "A-7" is recorded as an object classified as "AEW" of a flying object. The same applies to other objects classified into "SURF", "SUB", and "LAND". The display control unit 109 reads out each model name recorded in the storage unit 112 and generates images of areas 211 to 214.

Further, the storage unit 112 records the characteristics of the detection capability of the detection system included in each model set by the object detection characteristic setting unit 105 in association with each model name. For example, the display control unit 109 generates an image (not shown) of an input screen for setting information indicating the characteristics of the detection ability of each model (object), and the user (for example, the operator of the self-moving object) can generate an image (not shown). The characteristic information of each model (for example, radar frequency, output, scanning range, etc.) is input through this input screen. Then, the input / output unit 110 receives the input, and the object detection characteristic setting unit 105 records each model name in the storage unit 112 in association with the input characteristic information.

Further, the display control unit 109 displays the APPLY button 211d and the FAKE button 211e in the areas 211 to 214. When the user presses the APPLY button 211d, the input / output unit 110 accepts the pressing operation and notifies the deception / normal setting unit 107 that the APPLY button 211d has been pressed. The deception / normal setting unit 107 sets the reflection mode of the electromagnetic wave or the like that collides with the self-moving body and is reflected to the normal mode. Further, the detection range calculation unit 108 calculates the maximum distance between the two when the self-moving object in the normal mode is detected by the object. The maximum distance when a mobile is detected by an object is influenced by the stealth characteristics of the mobile and its ability to detect the object. For example, if the RCS of the self-moving body is large, it can be easily detected from the object. Further, if the detection ability of the object is high, it becomes easy to detect even if the RCS of the self-moving object is small. An example of how to calculate the maximum distance is shown. Equation (1) shown below is a radar equation used to calculate the maximum distance.

Here, Rmax is the (maximum) detection distance from the object. When approaching a distance within Rmax from the object, the self-moving object is detected from the object. Pt is the transmission power of the radar emitted by the object. G is the gain of the radar receiving antenna included in the object. λ is the wavelength of the radar emitted by the object. σ is the radar cross section (RCS) of the self-moving body. Pr is the minimum received power of the radar that the object can receive. Here, Pt, G, λ, and Pr are values recorded in the storage unit 112 by the object detection characteristic setting unit 105 for each model (object). Further, σ is one of the characteristic information related to stealth recorded in the storage unit 112 by the self-moving body stealth characteristic setting unit 101.
The detection range calculation unit 108 calculates the detection distance from the object by, for example, the equation (1).

The display control unit 109 generates an image showing the result calculated by the detection range calculation unit 108 and displays it in the stealth reduction area notification area 22. The image of the stealth reduction region notification region 22 illustrated in FIG. 2 shows the stealth reduction region when the mobile body is a ship and the object is an aircraft. The point P1 in the stealth reduction region notification region 22 is the position where the self-moving body exists. The range indicated by the broken line H1 is, for example, a stealth reduction region when the object is “A-7”. Further, the range indicated by the alternate long and short dash line H2 is, for example, a stealth reduction region when the object is “A-31”. When the user selects "A-7" in the AEW area 211a and presses the APPLY button 211d, the detection range calculation unit 108 records the above Pt, G, λ, in association with "A-7". Each value of Pr (characteristic of detection ability) is read from the storage unit 112. Further, the detection range calculation unit 108 reads out the characteristic σ related to the stealth property of the self-moving body from the storage unit 112. Then, the detection range calculation unit 108 calculates the detection distance Rmax from the object by the equation (1). The set of points obtained by plotting the position indicated by the calculated distance Rmax toward the outside along the contour of the self-moving body is, for example, the region indicated by the broken line H1. The broken line H1 indicates the boundary where the self-moving body is detected when the object exists inside this region (point P1 side). The user who steers the self-moving body sees this display and steers the object so as not to approach the distance within the area of the broken line H1. In the case of the example of FIG. 2, the self-moving body is, for example, a ship existing with the bow facing upward on the paper. In the case of the example of FIG. 2, the RCS in the bow, stern and side directions is large. Therefore, the stealth-reduced region has a shape that greatly expands in these directions.

Next, the user selects "A-31" in the AEW area 211a and presses the APPLY button 211d. Here, it is assumed that the detection ability of "A-31" is higher than the detection ability of "A-7". That is, it is assumed that the value of Rmax according to the equation (1) is larger in "A-31" than in "A-7". Then, the detection range calculation unit 108 reads out the information (Pt, etc.) indicating the characteristic of the detection ability recorded in association with "A-31" and the characteristic σ related to the stealth property of the self-moving object from the storage unit 112. Rmax is calculated. As a result, for example, the stealth reduction region indicated by the alternate long and short dash line H2 is calculated by the detection range calculation unit 108. The user who controls the self-moving body can see this display and grasp the distance that the self-moving body should not approach the object "A-31". As described above, according to the stealth reduction area notification system 10 of the present embodiment, when a model that is a candidate for an object is selected from the options of the object, it is assumed that the object is the selected model. It is possible to immediately grasp the area of reduced stealth. As a result, for example, even when the model of the object cannot be clearly grasped or when it can be assumed that multiple models exist in the surroundings, the user can reduce the distance to the object. It can be easily grasped.

Next, the user selects "A-31" in the AEW area 211a and presses the FAKE button 211e. Then, the input / output unit 110 accepts the pressing operation, and the deception / normal setting unit 107 sets the reflection mode of the electromagnetic wave or the like that collides with the self-moving body and is reflected in the deception mode. Then, the detection range calculation unit 108 reads information (Pt or the like) indicating the characteristics of the detection ability of “A-31” from the storage unit 112. Further, the detection range calculation unit 108 reads the characteristic σ'related to the stealth property of the self-moving body in the deception mode from the storage unit 112. For example, σ', which is the RCS of the deception mode, is a value larger than σ, which is the RCS of the normal mode. The detection range calculation unit 108 calculates the stealth reduction region in the deception mode indicated by the solid line H3 by the equation (1) using these values. The solid line H3 shows that the stealth reduction region is larger than the other two stealth reduction regions exemplified, and it is shown that the stealth reduction region is more easily detected. In this way, in a ship or the like, electromagnetic waves or the like are radiated in a deception mode to make it easier to be detected by an object, so that the threat target is intentionally erroneous information of the ship (for example, information that the ship is larger than the actual one). May be made to recognize. According to the present embodiment, it is possible to grasp in what range the object existing in the range can recognize the information of the erroneous self-moving body only by pressing the FAKE button 211e. Further, in order to prevent even erroneous information in the deception mode from being recognized, the self-moving body can grasp how close it can be to the object "A-31".

Further, points P2 and P3 indicate the positions of the self-moving body and other moving bodies on the ally side forming a formation. The detection range calculation unit 108 calculates the stealth reduction region for other moving objects, and the display control unit 109 can display the stealth reduction region as in the case of the point P1 (not shown). For example, when the operator of the self-moving body gives an instruction to the operator of the other moving body to control the movement of the formation, the stealth property of the other moving body displayed in the stealth reduction area notification area 22 While grasping the lowered area, it is possible to inform the operators of other moving objects of the areas that should not be entered.

In addition, in the storage unit 112, information indicating the characteristics related to each stealth property is recorded in association with the self-moving body and other moving bodies. For example, the display control unit 109 generates an image of an input screen for setting information indicating the stealth characteristics of the self-moving body and other moving bodies (not shown), and the user can use the input screen to generate the respective characteristic information (for example, for example). , Radar cross section). Then, the input / output unit 110 receives the input information, and the self-moving body stealth characteristic setting unit 101 and the other mobile body stealth characteristic setting unit 103 record each characteristic information in the storage unit 112.

In addition, the user can set the positions of the self-moving body and other moving bodies. For example, the user specifies the position of the self-moving body (the position of the point P1) in the stealth reduction area notification area 22. Then, via the input / output unit 110, the self-moving body position setting unit 102 obtains the position information (for example, the actual latitude and longitude corresponding to the coordinate information of the position specified by the user) corresponding to the designated position. The position of the moving body is recorded in the storage unit 112. The same applies to the positions of other moving bodies (positions of points P2, P3, etc.). The other moving body position setting unit 104 records the position information corresponding to the position specified by the user in the storage unit 112 as the position of the other moving body.

In FIG. 2, an example is shown in which the position of the object is not particularly specified, and the stealth reduction region around the self-moving body is calculated and displayed. Next, with reference to FIG. 3, an example in which a position where an object exists is set and a stealth reduction region is displayed according to the position and the characteristics of the detection ability of the object will be described.
FIG. 3 is a second diagram illustrating the function of the stealth reduction region notification system of the present invention.
FIG. 3 shows an example of the display screen 20 when a plurality of objects are set.
The user selects "A-7" in the AEW area 211a and specifies a point Q1 (slightly lower on the left side of the paper with respect to the self-moving body) indicating the position where the object "A-7" exists. .. Then, the other moving body position setting unit 104 records in the storage unit 112 in association with the position information corresponding to the point Q1 and the fact that the object is “A-7”.
Further, the user selects "B-7" in the Fighter area 211b and specifies a point Q2 (slightly above the right side of the paper with respect to the self-moving body) indicating the position where the object "B-7" exists. To do. Then, the other moving body position setting unit 104 records in the storage unit 112 in association with the position information corresponding to the point Q2 and the fact that the object is “B-7”. Next, the user presses the APPLY button 211d.

Then, the detection range calculation unit 108 includes information (Pt, etc.) indicating the characteristics of the detection capabilities of "A-7" and "B-7", the characteristic σ related to the stealth of the self-moving object, and the point P1. The position information of the points Q1 and Q2 is read from the storage unit 112, and for example, the stealth reduction region indicated by the broken line H4 is calculated. More specifically, for example, the detection range calculation unit 108 describes the point Q1 side (slightly below the left side of the paper) as viewed from the point P1 according to the positional relationship between the points P1, Q1, and Q2. The stealth reduction region is calculated based on the information indicating the characteristics of the detection ability of "A-7" and the information related to the stealth property of the self-moving body. Further, the detection range calculation unit 108 is related to the information indicating the characteristics of the detection ability of "B-7" and the stealth property of the self-moving body with respect to the point Q2 side (slightly upper side on the right side of the paper) when viewed from the point P1. Calculate the stealth reduction area based on the information to be used. The region indicated by the broken line H4 is an example of the stealth reduction region calculated in this way.

When there are a plurality of types of objects in this way, it is possible to grasp the shape of the stealth reduction region according to the position of each object and the characteristics of the detection ability as described with reference to FIG. In addition, even if the position of each object is unknown, the stealth reduction region according to the position of the object and the characteristics of the detection ability can be easily grasped by changing the position where the object exists in various ways. Can be done. Although the case where the stealth reduction region is displayed in two dimensions is illustrated in FIGS. 2 and 3, the stealth reduction region may be displayed in three dimensions.

FIG. 4 is a flowchart showing an example of processing of the stealth reduction region notification system of the present invention.
An example of the flow of the display processing of the stealth reduction region will be described with reference to FIG. 4 by taking the case where the self-moving body is a ship as an example.
In the processing of steps S11 to S13 below, the display control unit 109 appropriately generates an image of an input screen or the like corresponding to the processing of each step, and the input / output unit 110 displays the image on a display or the like. ..
First, the self-moving body stealth characteristic setting unit 101 sets the stealth characteristics of the own ship (step S11). For example, the user inputs RCS for all directions of the own ship to the stealth reduction area notification system 10. At this time, the user inputs the RCS in the normal mode and the deception mode. The self-moving body stealth characteristic setting unit 101 acquires RCS information for all directions via the input / output unit 110, and stores the acquired information in the storage unit 112 as information indicating the stealth characteristics of the own ship for each mode (mode). Record in normal mode, deception mode).

Next, the other mobile stealth characteristic setting unit 103 sets the stealth characteristics of the other ship that acts with the own ship (step S12). For example, the user inputs the RCS for all directions of one or more other ships into the stealth reduction area notification system 10. At this time, the user inputs the RCS in the normal mode and the deception mode. The other mobile stealth characteristic setting unit 103 acquires RCS information for all directions via the input / output unit 110, associates the acquired information with each ship in the storage unit 112, and relates to the stealth property of the other ship. Record each mode (normal mode, deception mode) as information indicating the characteristics.

Next, the object detection characteristic setting unit 105 sets the characteristics of the object detection ability (step S13). For example, the user can use Pt (radar transmission power), G (reception antenna gain), λ (wavelength), Pr (minimum reception power) for a plurality of objects predetermined in the stealth reduction region notification system 10. Etc. are entered. The other mobile stealth characteristic setting unit 103 acquires these values via the input / output unit 110, associates the acquired values with the respective objects in the storage unit 112, and shows the characteristics of the detection ability of the objects. Record as information.

When the setting process of steps S11 to S13 is completed, the display control unit 109 generates an image of the display screen illustrated in FIG. 2 and the like, and the input / output unit 110 displays the screen on the display.
Next, the self-moving body position setting unit 102 sets the position of the own ship (self-moving body) (step S14). For example, the user specifies the position of the map image of the stealth reduction area notification area 22 (clicking with an input device such as a mouse, touching with a finger when the display is a touch panel, etc.), or inputting latitude and longitude information. Etc., the position of the own ship is input to the stealth deterioration area notification system 10. The self-moving body position setting unit 102 acquires the position information via the input / output unit 110 and records it in the storage unit 112 as the position information of the own ship.

Next, the other moving body position setting unit 104 sets the position of another ship that acts with the own ship (step S15). For example, the user inputs the position of one or more other ships into the stealth reduction area notification system 10 in the same manner as in step S14. The other moving body position setting unit 104 acquires one or more position information via the input / output unit 110, and records it in the storage unit 112 as the position information of the other ship in association with each ship.

Next, the object position setting unit 106 sets the position (model) of the object (step S16). For example, the user inputs the position of one or more objects into the stealth reduction area notification system 10 in the same manner as in step S14. The object position setting unit 106 acquires one or a plurality of position information via the input / output unit 110, and records the position information of the object in the storage unit 112 in association with each object. The process of specifying the position of the object may be omitted.

Next, the user selects an arbitrary object from the area 211 or the like (step S17). The input / output unit 110 outputs the information of the selected object to the detection range calculation unit 108. Next, the input / output unit 110 determines whether or not there is an instruction to display the stealth reduction region (step S18). Specifically, it is determined whether or not the "APPLY button 211d" and "FAKE button 211e" illustrated in FIGS. 2 and 3 are pressed. When any button is pressed, the input / output unit 110 determines that there is an instruction to display the stealth reduction area, and when none of the buttons is pressed, the input / output unit 110 displays the stealth reduction area. Judge that there is no instruction. When there is no instruction to display the stealth reduction area (step S18; No), the system waits while accepting the input of resetting the position information and reselecting the object from step S14. When there is an instruction to display the stealth reduction area (step S18; Yes), the input / output unit 110 notifies the deception / normal setting unit 107 that any button has been pressed. Next, the deception / normal setting unit 107 determines whether or not the selected mode is the normal mode (step S19). Specifically, when the APPLY button 211d is pressed, the deception / normal setting unit 107 determines that the selected mode is the normal mode, and when the FAKE button 211e is pressed, the deception / normal setting unit 107 is selected. Judge that it is a mode. In the case of the normal mode (step S19; Yes), the detection range calculation unit 108 calculates the stealth reduction region in the normal mode (step S20). Specifically, the deception / normal setting unit 107 instructs the detection range calculation unit 108 to perform the calculation in the normal mode. The detection range calculation unit 108 reads the RCS value σ in the normal mode from the storage unit 112, calculates the maximum detection distance Rmax for all directions of the ship by, for example, the equation (1), and surrounds it with the broken line H2 in FIG. Calculate the stealth reduction area. The detection range calculation unit 108 also calculates the stealth reduction region for one or more other ships. In addition, although the example of the stealth reduction region in the two-dimensional plane is shown in FIGS. 2 and 3, the RCS in the vertical direction of the own ship or the like is registered, and the three-dimensional stealth reduction region is set. You may calculate. Further, the detection system is not limited to electromagnetic waves such as radar, and may be, for example, an underwater sonar targeting a submersible. In that case, the detection range calculation unit 108 may detect a sound wave by, for example, a known sonar equation. May be calculated. The detection range calculation unit 108 outputs the calculation result to the display control unit 109.

In the case of the deception mode (step S19; No), the detection range calculation unit 108 calculates the stealth reduction region in the deception mode (step S21). Specifically, the deception / normal setting unit 107 instructs the detection range calculation unit 108 to perform the calculation in the deception mode. The detection range calculation unit 108 calculates the stealth reduction region surrounded by the broken line H3 in FIG. 2 by using, for example, the RCS value σ'of the own ship in the deception mode and the equation (1). The detection range calculation unit 108 also calculates the stealth reduction region in the deception mode for one or more other ships. The detection range calculation unit 108 outputs the calculation result to the display control unit 109.

Next, the display control unit 109 generates an image displaying the stealth reduction area (for example, the stealth reduction area notification area 22 in FIGS. 2 and 3), and the input / output unit 110 displays the image on the display (for example, the stealth reduction area notification area 22). Step S22). The display control unit 109 may generate an image in which the stealth reduction region of the self-moving body and the stealth reduction region of the other moving body are displayed at the same time, or generate an image in which only one of them is displayed. Then, an image displaying only the stealth-reduced region of the self-moving body and an image displaying only the stealth-reduced region of the other moving body may be switched and generated by the user's operation. Further, for example, when a plurality of other moving objects are present, an image may be generated to display a stealth reduction region of one or a plurality of other moving objects selected based on a user operation.
Next, the process from step S14 is repeated until the user inputs an instruction to end the calculation / display process of the stealth-reduced area to the stealth-reduced area notification system 10 (step S23; No). Further, when the user inputs a processing stop command to the stealth reduction area notification system 10 via the input / output unit 110 (step S23; Yes), the stealth reduction area notification system 10 calculates the stealth reduction area. -Stop the display process.

According to the present embodiment, how close can the operator of a ship or the like be to an object that may pose a threat to the ship? It is possible to easily grasp which area can be entered / passed. As a result, the ship can be operated without being detected by the other party. In addition, other ships that act with their own ship can also grasp the area where they can enter and pass, and move while ensuring the stealth of the entire fleet.

FIG. 5 is a diagram showing an example of the hardware configuration of the stealth reduction region notification system of the present invention.
The computer 900 includes a CPU 901, a main storage device 902, an auxiliary storage device 903, an input / output interface 904, and a communication interface 905.
The stealth reduction region notification system 10 described above is implemented in the computer 900. The operation of each processing unit described above is stored in the auxiliary storage device 903 in the form of a program. The CPU 901 reads a program from the auxiliary storage device 903, expands it to the main storage device 902, and according to the program, each of the above functional units (self-moving body stealth characteristic setting unit 101, self-moving body position setting unit 102, and other moving body stealth). Characteristic setting unit 103, other moving body position setting unit 104, object detection characteristic setting unit 105, object position setting unit 106, deception / normal setting unit 107, detection range calculation unit 108, display control unit 109, input / output unit 110 ) Is executed. Further, the CPU 901 secures a storage area corresponding to the storage unit 112 in the main storage device 902 according to the program. Further, the CPU 901 secures a storage area for storing the data being processed in the auxiliary storage device 903 according to the program.

The computer 900 may be connected to a computer 910 such as a PC or a server terminal device via a communication interface 905 (communication unit 111). For example, the computer 900 operates on a land data sensor or the like, transmits image data such as a processing result input screen to the computer 910 installed on the ship (self-moving body) via the communication interface 905 and the network, and sends the ship to the computer 910. The operator may operate the stealth reduction area notification system 10 implemented in the computer 900 through the computer 910.

In at least one embodiment, the auxiliary storage device 903 is an example of a non-temporary tangible medium. Other examples of non-temporary tangible media include magnetic disks, magneto-optical disks, CD-ROMs, DVD-ROMs, semiconductor memories, etc., which are connected via the input / output interface 904. When this program is distributed to the computer 900 via a communication line, the distributed computer 900 may expand the program to the main storage device 902 and execute the above processing. Further, the program may be for realizing a part of the above-mentioned functions. Further, the program may be a so-called difference file (difference program) that realizes the above-mentioned function in combination with another program already stored in the auxiliary storage device 903.

In addition, it is possible to replace the components in the above-described embodiment with well-known components as appropriate without departing from the spirit of the present invention. Further, the technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, the input / output unit 110 may notify the range indicated by the stealth reduction region by voice. The input / output unit 110 is an example of a notification unit. The input / output unit 110 is an example of a selection reception unit.

10 ... Stealth reduction area notification system 101 ... Self-moving body stealth characteristic setting unit 102 ... Self-moving body position setting unit 103 ... Other moving body stealth characteristic setting unit 104 ... Other moving body position Setting unit 105 ・ ・ ・ Object detection characteristic setting unit 106 ・ ・ ・ Object position setting unit 107 ・ ・ ・ Deception / normal setting unit 108 ・ ・ ・ Detection range calculation unit 109 ・ ・ ・ Display control unit 110 ・ ・ ・ ON Output unit 111 ・ ・ ・ Communication unit 112 ・ ・ ・ Storage unit

Claims (7)

A self-moving body stealth characteristic setting unit that sets information indicating the stealth characteristics of the self-moving body,
An object detection characteristic setting unit that sets information indicating the characteristics of the object detection ability,
Wherein based on the characteristic properties and the detection capacity for stealth, detection of the own mobile body and the object at that position exists to calculate the area indicating the range of the position as detected by the object Range calculation unit and
A notification unit that notifies the result of the calculation and
Stealth reduction area notification system. Object position setting unit that sets the position information of one or more of the objects,
With more
The detection range calculation unit, and further the positional information of the one or more objects, based on the characteristics of the detection capabilities of each of the object, the said own mobile body is detected by the object Calculate the area,
The stealth reduction area notification system according to claim 1. The other moving body position setting unit that sets the position information about the other moving body that moves together with the self-moving body, and
The other mobile stealth characteristic setting unit that sets the stealth characteristics of the other mobile,
With more
The detection range calculation unit is further based on the characteristic properties and the detection capacity for stealth of the other mobile, the area calculated for the other mobile body is detected by the object,
The notification unit notifies the area in which the other mobile body is detected by the object,
The stealth reduction area notification system according to claim 1 or 2. Any of claims 1 to 3, further comprising a deception / normal setting unit for switching and setting the stealth characteristics of the self-moving object between a normal mode and a deception mode for the purpose of deception of the object. The stealth reduction area notification system according to item 1. Selection reception unit that accepts the selection of the object from the predetermined options of the object,
With more
The detection range calculation unit calculates the area which is the detection by using the information showing the characteristics of the detection capability of the pre-recorded the object in association with the object selected,
The stealth reduction area notification system according to any one of claims 1 to 4. Steps to set information that indicates the stealth characteristics of the mobile body, and
Steps to set information that indicates the characteristics of the object's detection ability,
Step wherein based on the characteristic properties and the detection capacity for stealth, calculates an area indicating a range of the position as detected by the own mobile body is the object and the object to its position exists When,
The step of notifying the result of the calculation and
Stealth reduction area notification method having. The computer provided by the stealth reduction area notification system,
A means of setting information that indicates the stealth characteristics of a mobile body,
A means of setting information that characterizes the ability to detect an object,
Wherein based on the characteristic properties and the detection capacity for stealth, means for the own mobile body and the object at that position exists to calculate the area indicating the range of the position as detected by the object ,
Means for notifying the result of the calculation,
A program to function as.

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