High repetition frequency radar dim-small target detection tracking method based on CS-PF

A CS-PF, detection and tracking technology, applied in the detection and tracking of weak and small targets by high repetition frequency radar, and in the field of target detection and tracking, can solve the problems that cannot be adapted to the detection and tracking of weak and small targets by high repetition frequency radar

Inactive Publication Date: 2018-11-30
谭顺成
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Problems solved by technology

[0008] The purpose of the invention is to propose a method for detecting and tracking weak and small targets of high repetition frequency radar based on compressed sensing-particle filter (CS-PF), so as to solve the problem that the general PF-TBD method cannot be adapted to the detection and tracking of weak and small targets by high repetition frequency radar. Tracking Issues

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  • High repetition frequency radar dim-small target detection tracking method based on CS-PF

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[0085] The CS-PF method proposed by the present invention will be described in detail below with reference to the accompanying drawings.

[0086] Without loss of generality, set up a two-dimensional simulation scene, the radar monitoring area is S=[10km,120km]×[0,π / 2], the radar shutdown time K=30s, the radar scanning cycle T=1s, the radar coordinates (x s ,y s )=(0km,-10km), the standard deviation of the distance measurement error and the standard deviation of the azimuth measurement error are 0.2km and 0.0087rad respectively, the maximum unambiguous range R of the radar u , max =4.8km, the number of radar range units n R =50, the number of orientation units n B =180, the loss constant L on the radar distance R =1, the loss constant L in the azimuth B =0.0082; the number of particles used by the filter N p = 3000; the initial distribution q of the target appearance k is the uniform distribution in the entire monitoring area S, the initial distribution of PIN increment...

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Abstract

The invention discloses a high repetition frequency radar dim-small target detection tracking method based on CS-PF, and belongs to the field of radar data processing. A dim-small target detection tracking method based on PF-TBD has an obvious defects, i.e., when a radar adopts a high repetition frequency working mode, distance measurement of the radar on targets has high fuzziness, resulting in that the PF-TBD method generates a serious accumulation error in the process of accumulating dim-small targets and also cannot implement stable tracking, and thus, the method cannot be applicable to detection and tracking of the high repetition frequency radar on the dim-small targets. The High repetition frequency radar dim-small target detection tracking method based on CS-PF, which is disclosedby the invention, aims to solve such problem. The high repetition frequency radar dim-small target detection tracking method based on CS-PF, which is disclosed by the invention, can implement effective detection and tracking on the dim-small targets when carrying out defuzzification on distance measurement of the high repetition frequency radar, overcomes the limitation of applying on the basis of the general PF-TBD method, and is applicable to detection and tracking of an airborne PD high-repetition-frequency radar and the like on the dim-small targets, thereby having high engineering application value and wide popularization prospect.

Description

technical field [0001] The invention relates to a radar data processing method, in particular to a target detection and tracking method under the condition of fuzzy distance measurement and low detection probability, which is suitable for detection and tracking of weak and small targets by high repetition frequency radar. Background technique [0002] A large number of weak and small targets have brought severe challenges to traditional radar target detection and tracking. The detection and tracking of weak and small targets has become a difficult problem in the field of target detection and tracking. Therefore, how to realize the effective detection and tracking of small and weak targets by radar is of great significance to improve the combat effectiveness of radar, and it is a hot and difficult issue in current research. In order to achieve effective detection and tracking of small and weak targets, a lot of research has been done at home and abroad, and track-before-detec...

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Application Information

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IPC IPC(8): G01S13/72G01S7/41
CPCG01S13/72G01S7/418
Inventor 谭顺成康勖萍
Owner 谭顺成
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