Radar shielding blind area calibration method and device

A calibration method and radar blind zone technology, applied in the radar field, can solve the problems of large amount of calculation, slow speed, and inability to meet the calibration of radar blind zone, and achieve the effect of rapid calibration
CN112799061APending Publication Date: 2021-05-14中国人民解放军93114部队
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
中国人民解放军93114部队
Publication Date
2021-05-14

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Abstract

The invention relates to a radar shielding blind area calibration method and device, belongs to the technical field of radars, and solves the calibration problem of radar shielding blind areas, and the method comprises the following steps: on the basis of radar detection area digital map information, establishing a digital elevation model DEM based on a regular rectangular grid reference surface, each grid point comprising a DEM elevation; on a grid reference plane, taking a grid point S (i, j) where the radar detection point is located as an original point, taking a grid with a row number of i as a horizontal axis, taking a grid with a column number of j as a longitudinal axis, and dividing a grid region of the DEM into eight grid direction lines and eight grid quadrants spaced by the adjacent grid direction lines according to an eight-quadrant division mode of a rectangular plane coordinate system; using a ray method to calibrate radar blind areas on the eight grid direction lines; and calibrating the radar blind areas on the eight grid quadrants by adopting a reference plane method. According to the method, parallel computing can be executed by using the multi-core CPU, and rapid calibration of 360-degree radar omnibearing shielding blind areas is realized.
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Description

technical field

[0001] The invention relates to the technical field of radar, in particular to a method and a device for calibrating radar shadowing blind areas. Background technique

[0002] The blind area of ​​radar terrain shadowing is due to the fact that radar waves are blocked by terrain undulating areas during space travel, such as mountains, hills, forests, etc., which have a shielding effect on radar, thus forming that radar waves cannot reach within the effective range (threat radius) space area. The formation of radar terrain shadowing blind zone is only related to the terrain and the position of radar transmitting antenna.

[0003] The conventional radar blind zone calculation uses the same method to calculate each point one by one, which requires a large amount of calculation and slow speed, which cannot meet the requirements of rapid radar 360° all-round radar blind zone calibration. Contents of the invention

[0004] In view of the above analysis, the pres...

Claims

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