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A Particle Filter Method for Multi-frame Detection Tracking Sequence

A technology of particle filter and dot trace sequence, which is applied in the field of radar data processing and radar weak target tracking, which can solve the problems of loss of estimation accuracy and inability to obtain the complete track of the target.

Active Publication Date: 2016-09-28
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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AI Technical Summary

Problems solved by technology

However, multi-frame detection-before-tracking methods such as dynamic programming can only get the short track of the target at one time, and cannot get the complete track of the target.
Moreover, some multi-frame detection-before-tracking methods are state estimation results obtained in discrete space, and there is a certain loss in estimation accuracy

Method used

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  • A Particle Filter Method for Multi-frame Detection Tracking Sequence
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Embodiment

[0079] The present invention mainly adopts the method of computer simulation for verification, and all steps and conclusions are verified correctly on MATLAB-R2010b. The specific implementation steps are as follows:

[0080] Step 1. Variable initialization:

[0081] The initialization variables include: total simulation time K=30; number of frames N=6 for tracking processing before one detection; target signal-to-noise ratio SNR=8dB; threshold V for tracking processing before detection T =13.2847; possible range of tracking measurement before detection γ=7 2 ;The detection probabilities of the 1st, 2nd,...,N frames of the tracking processing before multi-frame detection are 0.876, 0.892, 0.918, 0.910, 0.908, 0.838 respectively; radar scanning period T=1s; target state transition matrix F

[0082] F = 1 T 0 ...

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Abstract

The invention provides a particle filter method for tracking dot trace sequences before multi-frame detection. This domestic invention uses the short track obtained by the multi-frame detection pre-tracking process to filter the target state, which can improve the accuracy of target state estimation; further processing the short track obtained by the multi-frame detection pre-tracking process, The long-term tracking of the target is realized, and the problem that the multi-frame detection-before-tracking method cannot provide the complete track information of the target is solved; the real-time estimation of the target state can be iteratively estimated without introducing too much storage and calculation; through Particle state prediction can effectively solve the problem of missed detection that may occur in the tracking of weak targets with low signal-to-noise ratio before detection, ensuring the continuity of the track.

Description

technical field [0001] The invention belongs to the technical field of radar data processing, and particularly relates to the technical field of radar weak target tracking. Background technique [0002] The increasingly complex radar detection environment and the increasingly mature target stealth technology make it more difficult for the radar to detect the weak target submerged in the strong clutter timely and reliably. It has important theoretical value and practical significance to improve the detection and tracking performance of radar for weak targets. [0003] Tracking-before-detection technology is a technology for detecting and tracking weak targets in a low signal-to-noise ratio environment. Different from traditional detection methods, pre-detection tracking not only announces the measurement results in a single frame, but also announces the measurement results and track of the target after processing multiple frames of data. The methods for implementing the tra...

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Application Information

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IPC IPC(8): G01S7/02
CPCG01S7/41
Inventor 易伟刘睿姜海超李溯琪苟清松崔国龙孔令讲杨晓波
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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