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GPS Beidou coordinate acquisition method and device for fixed radar detection target

An acquisition method and a fixed technology, applied in the direction of measuring devices, radio wave measurement systems, satellite radio beacon positioning systems, etc., can solve the problems of increasing the cost of radar detection, high cost, limited applicable scenarios, etc., and achieve improved acquisition Accuracy and efficiency, reduce implementation cost, achieve simple effect

Active Publication Date: 2021-09-28
湖南众天云科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In application scenarios such as traffic control, the error distance has even exceeded the width of the lane, which will make the target detection invalid
The cost of high-precision electronic compass / electronic gyroscope is also very high, which will greatly increase the implementation cost of radar detection, so it is often difficult to balance the coordinate acquisition accuracy and implementation cost at the same time
[0005] 2. Applicable scenarios are limited
Different from the mobile radar, the detection environment of the fixed radar is fixed during the target detection process, and for the GPS / Beidou coordinate positioning of the radar detection target, the above-mentioned environment of the fixed radar is usually not considered in the prior art characteristics, so that it cannot be fully combined with fixed environmental characteristics to achieve fast and accurate GPS / Beidou coordinate acquisition

Method used

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  • GPS Beidou coordinate acquisition method and device for fixed radar detection target
  • GPS Beidou coordinate acquisition method and device for fixed radar detection target
  • GPS Beidou coordinate acquisition method and device for fixed radar detection target

Examples

Experimental program
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Effect test

Embodiment 1

[0053] Such as figure 2 , 3 As shown, the steps of the GPS Beidou coordinate acquisition method of the fixed radar detection target in this embodiment include:

[0054] S01. Obtain the GPS / Beidou coordinates where the detection radar is located in advance, and the detection radar is fixed at the designated location;

[0055] S02. Obtain the GPS / Beidou coordinates of the reference point in advance, and obtain the relative coordinates and distance of the reference point relative to the detection radar. The reference point is in the irradiation direction of the detection radar;

[0056] S03. When the detection radar detects the target, obtain the radar coordinates of the radar detection target, according to the radar coordinates of the radar detection target, the GPS / Beidou coordinates of the detection radar, the GPS / Beidou coordinates of the reference point, and the reference point relative to the detection radar Relative coordinates and distances, use the pre-built coordinat...

Embodiment 2

[0118] This embodiment is basically the same as the embodiment, except that the reference point set in this embodiment and the radar detection target are located on the same side of the center line of the radar detection direction, taking the same as the left side as an example, as Figure 5 shown.

[0119] The same principle of embodiment 1, such as Figure 5 As shown, in this embodiment, the target point B can also be mapped to the line OR between the detection radar and the reference point R to form a mapping point A, and the GPS / Beidou coordinates (Xa, Ya) calculation formula of the mapping point A can be It was constructed in the same manner as in Example 1, as shown in formula (6).

[0120] The difference from Embodiment 1 is that since the reference point is on the same side as the radar detection target, the included angle θ between the first connection line OA between the detection radar and the mapping point and the second connection line OB between the detection ra...

Embodiment 3

[0129] This embodiment is basically the same as Embodiment 1, the difference is that in step S02 of this embodiment, specifically, a calibration is set in advance at any position on the centerline of the positive direction of the detection radar’s irradiation and the specified distance from the detection radar. object as a reference point, such as Figure 6 As shown, the distance between the reference point and the detection radar is obtained by ranging, and the relative coordinates of the reference point relative to the detection radar are obtained according to the distance obtained by ranging, so that it can be applied to occasions where the radar does not support static target detection.

[0130] Some radars do not support static target detection. For this type of radar, this embodiment selects the reference point on the centerline of the positive direction of the detection radar’s irradiation, such as Figure 6 As shown, a laser range finder can be used to measure the dist...

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Abstract

The invention discloses a GPS Beidou coordinate acquisition method and device for a fixed radar detection target, and the method comprises the steps: S01, obtaining the GPS / Beidou coordinate of a detection radar in advance, wherein the detection radar is fixedly disposed at a designated position; S02, acquiring GPS / Beidou coordinates of the reference point in advance, and acquiring relative coordinates and distance of the reference point relative to the detection radar; S03, when the detection radar detects a target, acquiring radar coordinates of the radar detection target, and determining the target position according to the radar coordinates of the radar detection target, the GPS / Beidou coordinates of the detection radar, the GPS / Beidou coordinates of the reference point and the relative coordinates and distance of the reference point relative to the detection radar; and calculating to obtain GPS / Beidou coordinate output of the radar detection target by using a pre-constructed coordinate calculation model. The method has the advantages of being simple in implementation method, low in cost, high in coordinate acquisition precision and efficiency, high in flexibility and the like.

Description

technical field [0001] The invention relates to the technical field of fixed radar target detection, in particular to a GPS Beidou coordinate acquisition method and device for fixed radar detection targets. Background technique [0002] The radar target detection process needs to be able to obtain accurate target GPS (Global Positioning System) / Beidou coordinates, and the radar device itself can only output the relative coordinates of the target relative to the radar after the target detection is completed, that is, the radar coordinates. If you need to output the GPS / Beidou coordinates of the target, you need to further use the GPS / Beidou module and electronic compass / electronic gyroscope to obtain the coordinates and orientation azimuth of the radar equipment installation, and then according to the measured radar equipment installation coordinates and orientation azimuth Calculate the GPS / Beidou coordinates of the radar detection target, such as figure 1 shown. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41G01S19/42
CPCG01S7/41G01S19/42
Inventor 黄利雄彭贵福张国壁舒键张永斌
Owner 湖南众天云科技有限公司