LiDAR Stray Light Suppression Angle Test Method
A technology of laser radar and test method, which is applied in the direction of radio wave measurement system, instrument, etc., can solve the problems of poor control of incident angle and limited test space conditions, etc., and achieve the advantages of saving test cost, simple and convenient measurement, and shortened test time Effect
Active Publication Date: 2014-10-08
BEIJING INST OF CONTROL ENG
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Problems solved by technology
[0003] The technical solution of the present invention is to overcome the deficiencies of the prior art, provide a method for testing the laser radar stray light suppression angle, overcome the shortcomings of the limited test space conditions of the laboratory and the poor control of the incident angle, and the test method is simple , save a lot of test time and cost
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[0020] 1) First measure figure 1 The middle optical plane mirror 4 is placed at the angle of point P relative to the lidar 6: Point P is on the center line of the spot of the solar simulator 1, first place the radar cooperative target 3 at this position, and the measurement center coincides with the point P, using the lidar 6 Measure the azimuth angle α1 and elevation angle β1 of point P in the Lidar 6 body coordinate system.
[0021] 2) Then put the optical flat mirror 4 to point P, adjust the reflection angle of the optical flat mirror 4 so that the sun's rays are directed toward the lidar 6.
[0022] 3) Then put the radar cooperative target 3 on the side of the optical flat mirror 4, and let the lidar 6 track the radar cooperative target 3;
[0023] 4) Move the radar cooperative target 3 in the direction of the optical plane mirror 4 until the lidar 6 cannot track the radar cooperative target 3, and use the lidar 6 to measure the azimuth angle α2 and the elevation angle β2 of the ...
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The invention discloses a laser radar stray light suppressing angle testing method which is capable of simulating sunlight to test by using a solar simulator in a laboratory. Sunlight emitted by the solar simulator can be reflected to any positions by regulating the direction of an optical plane mirror, so that an incident angle of the sunlight can be flexibly controlled, limits of laboratory space and environment conditions are overcome. In addition, the incident angle of the sunlight can be measured by a sensor, so that the number of other assisting measuring devices and testers in the test can be greatly reduced, testing cost is saved, achievement is convenient, and operation is simple. The laser radar stray light suppressing angle testing method can be applied to various stray light suppressing angle tests of optical sensors.
Description
Technical field [0001] The invention relates to a method for testing the stray light suppression angle of an optical sensor. Background technique [0002] The development of rendezvous and docking sensor lidar is one of the key relative measurement equipment for rendezvous and docking. As an optical measurement device, it is used in space to compare the interference of direct incident sunlight and solar stray light reflected by other materials around the cooperative target Sensitive, so it needs to test its stray light suppression ability. In order to obtain the stray light suppression performance of lidar as truly and comprehensively as possible, according to the measurement performance index of lidar distance and angle, two test conditions need to be met, namely, strong enough sunlight intensity (greater than 0.8 solar constant) and larger Test environment space (the relative distance between the cooperative target and the radar is greater than 10m). The shortcomings of the c...
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IPC IPC(8): G01S7/497
Inventor 冯烨范松涛王瀛梁红义
Owner BEIJING INST OF CONTROL ENG