Radar clutter generation method based on terrain matrix and detection
A matrix and radar technology, which is applied in the field of radar clutter generation based on terrain matrix and detection, can solve the problems of not being able to adjust the radar receiving sensitivity and not being able to obtain clutter
Active Publication Date: 2021-09-10
成都众享天地网络科技有限公司
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is that in a certain area, when the terrain difference is too large, it is often impossible to obtain the clutter covered by mountains or ravines when performing radar clutter detection, and it is not possible to adjust the radar receiving sensitivity to meet different requirements. Conditional echo reflection detection, the purpose of this application document is to provide a radar clutter generation method based on terrain matrixing and detection, to solve the above problems
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[0019] Such as figure 1 As shown, a radar clutter generation method based on terrain matrixing and detection in the present invention first performs matrix gridding with a certain precision on the region to obtain the coordinates of each precision point in the matrix, and obtains all elevation data in the region; then calculates The space straight line equation of the radar ray, the radar ray is divided into several segments, and each segment point is projected onto the terrain elevation, and the current height of the radar ray is calculated by calculating the latitude and longitude height of each segment point; the two heights can be compared with each other to obtain The conclusion of whether the radar ray is blocked by mountains or ravines; if the radar ray is blocked, then the radar echo point is the occlusion point; after that, the radar echo energy is calculated by the radar equation in free space, and it is compared with the radar receiving sensitivity For comparison, i...
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The invention discloses a radar clutter generation method based on terrain matrix and detection, and the method comprises the following steps: S1, delimiting a preset region range in a to-be-detected region, carrying out the coordinate system processing of the preset region range, and obtaining all elevation data in the processed region; s2, calculating a radar ray space linear equation, and traversing each calculation node of the area matrix through the radar ray space linear equation; s3, after each calculation node is traversed, acquiring whether the terrain height of each node is higher than the radar ray height of the current projection or not; if the terrain height of each node is higher than the height of the radar ray, judging that the radar ray is shielded, and performing reflection calculation by taking a shielding point as a radar echo point; if theterrain height of each node is lower than the height of the radar ray, judging that the radar ray is not shielded, and performing reflection calculation by taking the original calculation node as a radar echo point; and S4, setting the radar receiving sensitivity, and performing threshold judgment on a calculation result and the radar receiving sensitivity.
Description
technical field [0001] The invention relates to a method for detecting radar clutter generation, in particular to a method for generating radar clutter based on terrain matrixing and detection. Background technique [0002] Radar can detect target objects by transmitting and receiving radio waves, for example, detecting the distance, azimuth, height, speed, shape and target type of the target object. When implementing detection, the radar detects by transmitting a radar beam and receiving the echo signal of the target object on the radar beam. In the echo signal, in addition to the echo signal (radio wave) reflected by the target object, part of the radar beam will also touch the ground during the propagation of the radar beam, such as the ground surface, hills and buildings. Therefore, it may be blocked and reflected by the ground surface, hills and buildings, etc., so that the radar beam of the radar ray space linear equation cannot be effectively transmitted to the targe...
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CPCG01S7/414
Inventor 孙成刚岳红霞张剑锋潘宝凤谢勇蒋伟唐庆生
Owner 成都众享天地网络科技有限公司