Distributed radar target detection method and device based on iterative grids
A radar target and detection method technology, which is applied in the direction of measuring devices, radio wave measurement systems, radio wave reflection/re-radiation, etc., can solve problems such as huge amount of calculation and difficulty in meeting the development needs of high-efficiency detection, and improve detection efficiency , to ensure timeliness, to ensure the effect of detection accuracy
Active Publication Date: 2022-07-22
INFORMATION SCI RES INST OF CETC
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[0003] However, the traditional grid detection method only performs a grid division on the detection area, and traverses each grid area to complete the target detection
Moreover, in order to ensure high detection accuracy, the grid size in the traditional grid detection method often needs to be close to the distance resolution of the radar node
Therefore, in the face of large detection scenarios, the above-mentioned traditional grid detection method not only needs to traverse a large number of grids, but also has a huge amount of calculation, which is difficult to meet the development needs of high-efficiency detection.
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[0054] In the prior art, a collaborative detection system detection method based on spatial grid division includes the following steps:
[0055] Step S1: Build a three-dimensional space grid 3d , the three-dimensional detection space is evenly divided into rectangular grids whose longitude, latitude, and height are △Lo, △La, and △H, respectively.
[0056] Step S2: Calculate the azimuth angle corresponding to each three-dimensional grid and each radar node θ ,Pitch angle and distance R .
[0057] Step S3: Preprocessing the echo data of each channel, that is, performing matched filtering processing and moving target detection processing on the echo data of each channel, and outputting a sequence of preprocessing results: ,in, Y c ( l ) means the first c channel l A sequence of preprocessing results of distance units, m is the pulse number, and Mp is the number of pulses. y c [ l , m ] is the first c channel l the first distance unit m A sequence of preprocess...
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The invention relates to the field of radar target detection, and provides a distributed radar target detection method and device based on iterative grids. According to the method, firstly, the plurality of grid groups corresponding to the three-dimensional detection space and the index information set corresponding to each grid group and each channel distance unit are constructed offline based on the cuboid grids of multiple sizes, so that the timeliness of iterative grid detection is effectively ensured. And then performing iterative detection on the three-dimensional detection space by using the grid groups with different grid sizes, namely continuously reducing the detection range based on the position of the target and the neighborhood range thereof obtained by the previous detection, and performing grid detection by using the grid group corresponding to the reduced detection range until a preset number of iterations is reached, according to the method, the detection efficiency is effectively improved on the premise that the detection precision is ensured. In addition, according to the invention, iteration detection can be carried out in a corresponding detection range by continuously utilizing grids with smaller sizes, and the detection precision is further improved.
Description
technical field [0001] The present disclosure relates to the technical field of radar target detection, in particular to an iterative grid-based distributed radar target detection method and device. Background technique [0002] Distributed radar systems usually include a control center and multiple radar nodes. The control center and each radar node form a detection network through a local area network. The control center controls each radar node to realize grid joint detection, thereby effectively improving target detection performance in complex electromagnetic environments. . Therefore, grid joint detection technology based on distributed radar system has become one of the key research directions in the field of radar detection. [0003] However, the traditional grid detection method only divides the detection area once, and traverses each grid area to complete the target detection. Moreover, in order to ensure high detection accuracy, the grid size in the traditional ...
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Login to View More IPC IPC(8): G01S13/02G01S7/41
CPCG01S13/02G01S7/41
Inventor 吕文超宋扬葛建军刘光宏韩阔业武艳伟裴晓帅王欢
Owner INFORMATION SCI RES INST OF CETC