JP5378336B2 - Radar display device and radar display method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radar display device and a radar display method used in the radar display device which can display a distribution state of a radar echo even when a display monitor of raster scan system is used. <P>SOLUTION: The radar display device includes: an interface part; a comparison part; a first and a second switching parts; a first and a second recording parts; a display monitor and a control part. The interface part acquires echo intensity from a radar device. The comparison part outputs altitude maximum echo intensity and angle maximum echo intensity from the echo intensity. One of the first and the second recording parts connects with the comparison part through the first switching part and creates an image data reflecting the altitude maximum echo intensity and the angle maximum echo intensity, and the other records an image data created by the previous scan. The display monitor displays the created image data output from the other recording part through the second switching part. The control part controls to switch between the first and the second switching parts when one scanning is finished. <P>COPYRIGHT: (C)2012,JPO&amp;INPIT

Description

  Embodiments described herein relate generally to a radar display device including a display monitor employing a raster scan method and a radar display method used in the radar display device.

  In general, each time a radar display device used in a three-dimensional radar apparatus receives a scanning result at one position in a beam scanning region, it displays a radar echo at that position. When the display monitor of this type of radar display device adopts the raster scan method, the radar echo acquired by the latest scan is displayed on the display monitor. The radar echo display is updated as needed as the scan progresses, and switches to a new radar echo. For this reason, instantaneous radar echoes are displayed on the display monitor, and it is difficult to determine the distribution state of the radar echoes.

JP 2002-257933 A

  As described above, in the conventional radar display device, when a raster scan display monitor is used, the display of the radar echo is updated at any time, so that it is difficult to determine the distribution state of the radar echo.

  Therefore, an object is to provide a radar display device capable of displaying the distribution state of radar echoes even when a raster scan display monitor is used, and a radar display method used in the radar display device. It is in.

According to the embodiment, the radar display device includes an interface unit, a comparison unit, a first switching unit, first and second recording units, a second switching unit, a display monitor, and a control unit. The interface unit scans a preset scanning range, obtains an echo signal for each altitude and angle within the scanning range, and calculates the echo intensity of the echo signal for each altitude and angle from the radar device. Get echo intensity for each angle. The comparison unit compares the echo intensity for each altitude and for each angle, and outputs the altitude maximum echo intensity for each altitude and the angle maximum echo intensity for each angle. The first switching unit switches the output destination of the altitude maximum echo intensity and the angle maximum echo intensity according to a first switching signal. One of the first and second recording units is connected to the comparison unit via the first switching unit, and creates image data reflecting the altitude maximum echo intensity and the angle maximum echo intensity, Records the created image data created in the previous scan. The second switching unit switches connection according to the second switching signal, and outputs the created image data from the other recording unit. The display monitor displays the created image data from the second switching unit. Control unit, when one scan of the scanning range is completed, before SL to the other recording unit from a first switching unit, high maximum echo intensity and angle maximum echo is obtained by the following scanning of said scanning range a first switching signal prior SL so that the intensity is output to output to the first switching unit, the display created image data generated by the one recording unit via the second switching unit The second switching signal is output to the second switching unit so as to be output to the monitor .

It is a block diagram which shows the function structure of the radar display apparatus which concerns on this embodiment. It is a figure which shows an example of the scanning by a radar apparatus. It is a figure which shows the example of the scanning result which the radar display apparatus of FIG. 1 supplies from a radar apparatus. It is a figure which shows an example of the screen displayed on the display monitor of FIG. It is a figure which shows an example of the order at the time of a radar apparatus scanning the scanning range shown in FIG. It is a figure which shows an example of the scanning result which the interface part of FIG. 1 receives. FIG. 2 is a sequence diagram illustrating an operation during one scan of the radar display device of FIG. 1. It is a flowchart which shows the processing operation of the comparison part of FIG. It is the figure which showed the height maximum intensity | strength information and angle maximum intensity | strength information which are recorded by the recording part of FIG. It is a figure which shows the image data produced in the 1st recording area | region of FIG. 1 reflecting the altitude maximum intensity | strength information of distance Ln, and angle maximum intensity | strength information.

  Hereinafter, embodiments will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a functional configuration of a radar display device according to the present embodiment. The radar display device shown in FIG. 1 includes an interface unit 11, a data processing unit 12, a comparison unit 13, a recording unit 14, a display monitor 15, and a control unit 16.

  The interface unit 11 receives scanning results sequentially sent from a radar device or the like. The interface unit 11 outputs the received scanning result to the data processing unit 12.

  Here, for example, the radar apparatus scans the beam with respect to the scanning range shown in FIG. 2 and transmits a pulse signal at each position within the range. The radar apparatus receives an echo signal in which a pulse signal is reflected by a target, and calculates an echo intensity based on the received echo signal. Then, the radar apparatus outputs a scanning result in which distance information and echo intensity are associated for each altitude information and angle information to the radar display apparatus. FIG. 3 is a diagram illustrating an example of a scanning result supplied from the radar apparatus to the radar display apparatus.

  The data processing unit 12 converts the echo intensity included in the scanning result from the interface unit 11 into intensity information in a format based on the display format of the display monitor 15. The data processing unit 12 outputs the position information included in the scanning result together with the intensity information to the comparison unit 13.

  When the data processing unit 12 receives a predetermined number of scan results from the interface unit 11, the data processing unit 12 outputs an end signal to the control unit 16 assuming that one scan of the scan range shown in FIG.

  The comparison unit 13 compares the magnitude of the intensity information from the data processing unit 12 for each altitude, and outputs the maximum intensity information for each altitude (hereinafter referred to as altitude maximum intensity information) to the recording unit 14. The comparison unit 13 compares the magnitude of the intensity information from the data processing unit 12 for each angle, and outputs the maximum intensity information for each angle (hereinafter referred to as angle maximum intensity information) to the recording unit 14. .

  The recording unit 14 includes a first switching unit 141, first and second recording areas 142-1 and 142-2, and a second switching unit 142.

  The first switching unit 141 switches the output destination according to the first switching signal from the control unit 16. The first switching unit 141 outputs the altitude maximum intensity information and the angle maximum intensity information from the comparison unit 13 to one of the first and second recording areas 142-1 and 142-2.

  In the first and second recording areas 142-1 and 142-2, an image format of image data to be displayed on the display monitor 15 is recorded in advance. When one of the first and second recording areas 142-1 and 142-2 receives altitude maximum intensity information and angle maximum intensity information from the comparison unit 13, the altitude maximum intensity information and angle maximum intensity are received. Image data to be displayed on the display monitor 15 is generated by updating the image format to reflect the information.

  The created image data created by the previous scan is recorded in the other of the first and second recording areas 142-1 and 142-2.

  The second switching unit 143 outputs the created image data from one of the first and second recording areas 142-1 and 142-2 in accordance with the second switching signal from the control unit 16. At this time, the second switching unit 143 receives the created image data from the recording area opposite to the recording area to which the altitude maximum intensity information and the angle maximum intensity information are supplied from the first switching unit 141. .

  The display monitor 15 is a monitor that employs a raster scan method. The display monitor 15 displays the created image data supplied from the recording unit 14 via the second switching unit 143. FIG. 4 is a diagram showing a screen displayed on the display monitor 15. In this embodiment, the distribution state of radar echoes in the height direction is regarded as a “plane viewed from the side”, and the distribution state of radar echoes in the angle direction is regarded as a “surface viewed from above”, thereby The distribution state is displayed in two dimensions. Note that the viewpoint V1 of the “surface viewed from the side” and the viewpoint V2 of the “surface viewed from the top” are shown in FIG.

  Upon receiving the end signal from the data processing unit 12, the control unit 16 outputs a first switching signal for switching the connection to the first switching unit 141. In addition, when receiving the end signal from the data processing unit 12, the control unit 16 outputs a second switching signal for switching the connection to the second switching unit 143.

  Next, a radar display operation by the radar display device configured as described above will be described in detail. Hereinafter, a radar display operation when the radar apparatus scans the scanning range shown in FIG. 2 in the order shown in FIG. 5 will be described as an example. The radar apparatus transmits a pulse signal at 64 points in the scanning range and receives an echo signal corresponding to the pulse signal. Thereby, 64 scan results shown in FIG. 6A are supplied from the radar apparatus in one scan. FIG. 6B conceptually shows the echo intensity in the scanning range. In the present embodiment, the echo intensity in the distance direction is also acquired as shown in FIGS. 6A and 6B. Hereinafter, processing for the echo intensity of the distance Ln will be described.

  Also, as an initial state, the first switching unit 141 is assumed to connect the comparison unit 13 and the first recording area 142-1. That is, image data for the echo intensity currently being scanned in the first recording area 142-1 is created. In addition, it is assumed that the second switching unit 143 connects the second recording area 142-2 and the display monitor 15. That is, the created image data is recorded in the second recording area 142-2, and this created image data is displayed on the display monitor 15.

  FIG. 7 is a sequence diagram showing an operation during one scan of the radar display device according to the present embodiment.

  First, the interface unit 11 receives the scanning result from the radar apparatus and outputs it to the data processing unit 12 (sequence S71). The data processing unit 12 converts the echo intensity included in the scanning result received by the interface unit 11 into intensity information, and outputs it to the comparison unit 13 together with the position information included in the scanning result (sequence S72).

  The comparison unit 13 compares the intensity information from the data processing unit 12 with the altitude maximum intensity information and the angle maximum intensity information recorded in the first recording area 142-1 (sequence S73), and the altitude maximum intensity information. And angle maximum intensity information is output via the 1st switching part 141 (sequence S74).

  That is, when the intensity information and the position information are supplied from the data processing unit 12, the comparison unit 13 receives the supplied intensity information and the maximum altitude intensity at the same altitude recorded in the first recording area 142-1. Compare with information. If the supplied intensity information is larger than the altitude maximum intensity information, the intensity information is output as new altitude maximum intensity information to the first recording area 142-1 via the first switching unit 141. When there is no altitude maximum intensity information of the same altitude, the supplied intensity information is output as altitude maximum intensity information.

  For example, when the intensity information “5” is supplied at the altitude H1, the comparison unit 13 compares “5” with “2”, which is the altitude maximum intensity information at that time, and calculates “5” having a high intensity. Output as new altitude maximum intensity information. Thereby, the comparison unit 13 outputs the altitude maximum intensity information “5” when the intensity information of the altitude H1 and the angle A3 is supplied, and the altitude maximum intensity information “5” when the intensity information of the altitude H2 and the angle A5 is supplied. 10 ”is output, and when the intensity information of altitude H8 and angle A3 is supplied, altitude maximum intensity information“ 3 ”is output.

  Further, when the intensity information and the position information are supplied from the data processing unit 12, the comparison unit 13 transmits the angle maximum intensity information to the first recording area 142 via the first switching unit 141 according to the flowchart shown in FIG. 8. Output to -1.

  When the intensity information and the position information are supplied from the data processing unit 12, the comparison unit 13 determines whether the altitude is H1 based on the position information (step S81). When the altitude is H1 (Yes in step S81), the comparison unit 13 outputs the intensity information as the angle maximum intensity information to the first recording area 142-1 (step S82), and ends the process.

  On the other hand, when the altitude is not H1 (No in step S81), the comparison unit 13 holds the supplied intensity information in the first recording area 142-1, and the angle A is greater than the angle maximum intensity information having the same angle A. It is determined whether it is larger (step S83). When the supplied intensity information is large (Yes in step S83), the intensity information is output to the first recording area 142-1 as angle maximum intensity information (step S84). If the supplied intensity information is small (No in step S83), the process ends.

For example, when the intensity information of the altitude H1 and the angles A1 to A8 is supplied, the comparison unit 13 has the altitude H1, and therefore the intensity information “0” of the altitude H1 and the angles A1 to A8 is entered into the first recording area 142-1 . , 2, 5, 5, 2, 2, 1, 1 "is output as angle maximum intensity information.

Further, when the intensity information “8” of the altitude H2 and the angle A4 is supplied, the comparison unit 13 determines that the intensity information “8” and the first recording area 142-1 since the altitude H 2 is not the altitude H 1. Compare the stored intensity information. At this time, the intensity information “0, 2, 5, 5, 2, 2, 1 , 1” of the altitude H1 and the angles A1 to A8 is held in the first recording area 142-1 , and the comparison unit 13 The intensity information “8” is compared with the intensity information “5” of the altitude H1 and the angle A4, and the intensity information “8” is output to the first recording area 142-1 as the angle maximum intensity information.

  The first recording area 142-1 updates the image format by reflecting the altitude maximum intensity information and the angle maximum intensity information from the comparison unit 13 (sequence S75).

  The radar display device receives the scanning results sequentially transmitted from the radar device, and repeats the above-described sequences S71 to S75.

  The image format recorded in the first recording area 142-1 includes the altitude maximum intensity information “5” and the angle maximum intensity information at the time when the intensity information of the altitude H 1 and the angle A 8 is supplied to the comparison unit 13. At the time when the intensity information of altitude H2 and angle A8 is supplied to the comparison unit 13 and updated to reflect “0, 2, 5, 5, 2, 2, 1, 1”, the altitude maximum intensity information “5, 10 ”, the angle maximum intensity information“ 1, 2, 6, 8, 10, 4, 2, 2 ”is updated, and when the intensity information of the altitude H3 and the angle A8 is supplied to the comparison unit 13, Altitude maximum intensity information “5, 10, 14” and angle maximum intensity information “1, 2, 6, 10, 14, 10, 4, 2” are updated to reflect the altitude H8, angle in the comparison unit 13. Altitude maximum intensity information when A8 intensity information is supplied 5,10,14,23,15,10,6,3 ", is updated to reflect the angle maximum intensity information" 1,2,10,15,23,15,10,2 ". FIG. 9 is a diagram schematically showing altitude maximum intensity information and angle maximum intensity information.

  FIG. 10 is a diagram showing image data created by reflecting the altitude maximum intensity information and the angle maximum intensity information of the distance Ln. When 64 scan results are supplied from the radar apparatus, “5, 10, 14, 23, 15, 10, 6, 3” is written on the surface viewed from the side of the distance Ln and viewed from above. "1, 2, 10, 15, 23, 15, 10, 2" is written on the surface. Here, only the processing for the distance Ln has been described, but actually, the processing for other distances is also performed at the same time.

  Subsequently, when the 64th scan result is supplied from the radar apparatus, the data processing unit 12 outputs an end signal to the control unit 16 (sequence S76). Upon receiving the end signal from the data processing unit 12, the control unit 16 outputs a first switching signal to the first switching unit 141 (sequence S77), and the altitude maximum intensity information and the angle maximum intensity obtained in the next scan. The first switching unit 141 is switched so that information is output to the second recording area 142-2. Thereby, the scanning result obtained by the next scanning is recorded in the second recording area 142-2. In addition, when receiving an end signal from the data processing unit 12, the control unit 16 outputs a second switching signal to the second switching unit 143 (sequence S78) and is recorded in the first recording area 142-1. The second switching unit 143 is switched to output the image data to the display monitor 15. As a result, the image data generated as described above in the first recording area 142-1 is displayed on the display monitor 15. This display is maintained until the scanning within the scanning range is completed and the connection is switched again.

  As described above, in the above-described embodiment, the maximum altitude intensity information and the maximum angle intensity information are recorded, and image data is created based on the maximum altitude intensity information and the maximum angle intensity information. As a result, it is possible to create an image capable of discriminating the distribution state of the radar echo, not the instantaneous radar echo image.

  Further, in the above embodiment, image data being scanned in one of the first and second recording areas 142-1 and 142-2 is created and created from the other recording area by the previous scan. Output the created image data. When one scan is completed, the recording area for creating the image data being scanned and the recording area for outputting the created image data are switched. Thereby, the same image is displayed until the recording area is switched, and it is possible to ensure a long display time of the echo intensity.

  Therefore, the radar display device according to the present embodiment displays the radar echo distribution state for a long time, not an instantaneous scene display depending on the scanning timing, even when a raster scan display monitor is used. Can do. In addition, this improves the visibility of the operator and improves work efficiency.

  In the above-described embodiment, the case where the scanning range shown in FIG. 2 is scanned in the order shown in FIG. 5 has been described as an example. However, the present embodiment is not limited to this.

  In the above embodiment, the case where the scanning range is divided into 64 spaces of 8 altitudes and 8 angles has been described, but the present embodiment is not limited to this. For example, the processing may be performed by dividing into a space having an altitude of 8 or more and an angle of 8 or more.

  Although the embodiment of the present invention has been described, this embodiment is presented as an example and is not intended to limit the scope of the invention. This embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 11 ... Interface part 12 ... Data processing part 13 ... Comparison part 14 ... Recording part 141 ... 1st switching part 142-1, 142-2 ... 1st and 2nd recording area 143 ... 2nd switching part 15 ... Display Monitor 16 ... control unit

Claims (6)

An echo for each altitude and angle is obtained from a radar device that scans a preset scanning range, acquires an echo signal for each altitude and angle within the scanning range, and calculates an echo intensity of the echo signal for each altitude and angle. An interface unit for acquiring strength;
A comparison unit that compares the echo intensity for each altitude and each angle, and outputs an altitude maximum echo intensity for each altitude and an angle maximum echo intensity for each angle;
A first switching unit that switches an output destination of the altitude maximum echo intensity and the angle maximum echo intensity according to a first switching signal;
One is connected to the comparison unit via the first switching unit, and creates image data reflecting the maximum altitude echo intensity and the maximum angle echo intensity, and the other is created by the previous scan. First and second recording units for recording image data;
A second switching unit that switches connection according to a second switching signal and outputs the created image data from the other recording unit;
A display monitor for displaying the created image data from the second switching unit;
When a single scan of the scanning range is completed, before Symbol first switching unit to the other recording unit, advanced maximum echo intensity and angle maximum echo intensity is obtained by the following scanning of the scanning range is output outputs pre Symbol first switching signal to said first switching unit in so that, the one created image data created by the recording portion of the output to the display monitor through the second switching unit And a control unit for outputting the second switching signal to the second switching unit.   2. The display monitor displays the distribution state of the echoes in the altitude direction as a “plane viewed from the side”, and displays the distribution state of the echoes in the angular direction as a “plane viewed from the top”. The radar display device described.   The display monitor displays the created image data recorded in the output source recording unit until the second switching unit switches the output source recording unit in response to the second switching signal. The radar display device according to claim 1.   The radar display apparatus according to claim 1, wherein the display monitor employs a raster scan method. An echo for each altitude and angle is obtained from a radar device that scans a preset scanning range, acquires an echo signal for each altitude and angle within the scanning range, and calculates an echo intensity of the echo signal for each altitude and angle. Get strength,
Compare the echo intensity for each altitude and each angle, extract the altitude maximum echo intensity for each altitude and the angle maximum echo intensity for each angle,
In one of the first and second recording units, create image data reflecting the maximum altitude echo intensity and the maximum angle echo intensity,
Displaying the created image data created on the basis of the previous scan with respect to the scan range , recorded on the other of the first and second recording units, on a display monitor;
Each time one scan of the scanning range is completed, the created image data created by the one recording unit is displayed on the display monitor, and is acquired by the next scanning with respect to the scanning range by the other recording unit. altitude up to reflect the echo intensity and angle maximum echo intensity to create an image data, radar display method characterized by switching the first and second recording unit that. The radar display method according to claim 5, wherein the created image data created based on a previous scan with respect to the scan range is displayed during a period until the first and second recording units are switched.

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