Target trace point condensation method of ground reconnaissance radar

A point-track agglomeration and radar target technology, applied to radio wave measurement systems, instruments, etc., can solve the problems of target loss, inability to realize the distance resolution of adjacent targets, and inability to solve the problem of single target distance splitting, so as to solve the problems of cohesion, increase System complexity, effect of improving distance resolution ability

Active Publication Date: 2020-05-08
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing spot agglomeration method relying solely on the centroid method can neither solve the splitting problem on the distance of a single target, form false spots, nor realize the distance resolution of adjacent targets, resulting in target loss

Method used

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  • Target trace point condensation method of ground reconnaissance radar
  • Target trace point condensation method of ground reconnaissance radar
  • Target trace point condensation method of ground reconnaissance radar

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Experimental program
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Embodiment

[0084] The dot coagulation process flow of the present invention is as follows figure 1 As shown, in a single accumulation cycle, first arrange all the original targets in ascending order according to the distance gate number, and get i n ={r,f,A},n=1,2,...N, r,f,A are the range gate number, Doppler number, target power respectively, N is the number of targets, give the definition:

[0085] 1) i n The distance gate number r of the target point is determined by i n .r means;

[0086] 2)i n The Doppler number f of the target point is given by i n .f means;

[0087] 3)i n The power A of the target point is given by i n .A said.

[0088] then i n ,n=1,2,...N satisfies i 1 .r2 .rN .r. distance threshold r d As a boundary, the sorted original target is divided into the near zone point p={r, f, A} and the far zone point q={r, f, A}

[0089]

[0090] where R L is the set of points in the near area, L is the number of points in the near area, R F is the set of far zon...

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Abstract

The invention discloses a target trace point condensation method of a ground reconnaissance radar. The method comprises the following steps: after completion of target detection by a radar, processingoriginal trace point data output by a target detector, and extracting all original target information, including a distance gate number, a Doppler number and target power, in a single phase-coherentaccumulation period; according to the target distance, carrying out short-distance target trace point condensation processing and long-distance target trace point condensation processing respectively,and finally carrying out summarization to obtain a trace point condensation result of the current accumulation period. According to the invention, on the premise of not increasing the system complexity, the distance precision of a single target and the distance resolution capability of adjacent targets are improved.

Description

technical field [0001] The invention belongs to the field of ground reconnaissance radar digital signal processing, and in particular relates to a ground reconnaissance radar target spot aggregation method. Background technique [0002] With the development of radar technology, radar is developing towards intelligence, miniaturization, informatization and precision. At the same time, people put forward more requirements on the functions and performance of radar. Radar not only needs to detect targets, but also provides more accurate target information, while ensuring the ability to distinguish multiple targets. The trace aggregation technology is the process of further processing the detected traces of the original target to obtain more accurate target information and realize the distance resolution of adjacent targets. [0003] Traditional radar is mainly used to measure basic state information such as distance, speed and azimuth of the target. For modern radar, target de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/02G01S7/292G01S7/35
CPCG01S7/021G01S7/2923G01S7/354
Inventor 谢仁宏吕宁芮义斌李鹏郭山红王欢王丽妍孙泽渝
Owner NANJING UNIV OF SCI & TECH
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