A tracking-before-detection method for multiple targets

A forward tracking and multi-target technology, applied in the radar field, can solve the problems of reducing radar detection and tracking performance, increasing the number of false alarm tracks, etc., and achieve the effect of improving detection and tracking performance, reducing the number of value functions, and eliminating expansion phenomena

Active Publication Date: 2018-02-13
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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AI Technical Summary

Problems solved by technology

[0005] However, the dynamic programming tracking before detection algorithm has the problem of value function expansion, that is, the value function corresponding to the target state and the noise state adjacent to the target state is significantly higher than the value function of the other noise states
The value function extension increases the number of false alarm tracks and reduces the detection and tracking performance of the radar for nearby targets

Method used

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  • A tracking-before-detection method for multiple targets
  • A tracking-before-detection method for multiple targets
  • A tracking-before-detection method for multiple targets

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Embodiment Construction

[0028] Compared with the traditional dynamic programming tracking before detection method, the invention can effectively eliminate the value function expansion phenomenon, reduce the number of false tracks, and improve the detection and tracking performance of the adjacent target.

[0029] The present invention mainly adopts the method of simulation test for verification, and all steps and conclusions are verified correctly on MATLAB R2012b. The specific implementation steps are as follows:

[0030] Step 1: System parameter initialization. Number of distance units N r =30, the number of azimuth units N θ =30, the minimum velocity V in the distance dimension 1 =-1, the maximum velocity V in the distance dimension 2 =1, the minimum velocity V in the azimuth dimension 3 =-2, the maximum velocity V in the azimuth dimension 4 =2, accumulated frame number K=6, state transition number q=9, detection threshold V T = 14.1463.

[0031] Step 2: Establish a set of states for each ...

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Abstract

The invention discloses a multi-target tracking method before detection, belongs to the technical field of radar, relates to a target detection and tracking method, and can be used for radar weak target detection and tracking processing in a strong noise / clutter environment. Aiming at the value function extension problem existing in the existing dynamic programming algorithm, the present invention proposes a new multi-target detection-before-tracking algorithm. The purpose of improving the radar's detection and tracking performance of nearby targets is to increase the number of tracks. By correcting the calculation of the value function, the expansion phenomenon of the value function is effectively eliminated, thereby reducing the number of value functions passing the threshold, thereby reducing the number of false tracks, and improving the detection and tracking performance of nearby targets.

Description

technical field [0001] The invention belongs to the technical field of radar and relates to a target detection and tracking method, which can be used for radar weak target detection and tracking processing in a strong noise / clutter environment. Background technique [0002] With the increasing complexity of radar detection targets and working environments, it is difficult for radars to effectively detect long-range offensive targets, targets hidden in strong clutter on the ground and sea, stealth targets, etc. The radar warning time increases and the power range decreases, giving National security poses a serious threat. [0003] Using the signal processing method to realize the detection and tracking of weak targets has flexible means, low cost and broad application prospects. Usually, the tracking-before-detection algorithm can be used to jointly process multi-frame data, accumulate target energy, and improve the echo signal-to-noise ratio, thereby improving the radar's a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/66
CPCG01S13/66
Inventor 易伟姜海超卢术平郭世盛孔令讲杨晓波崔国龙汪兵
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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