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A Particle Filter Fusion Method for Tracking Short Tracks Before Multi-Frame Detection

A particle filtering and fusion method technology, applied in measurement devices, radio wave measurement systems, radio wave reflection/re-radiation and other directions, can solve problems such as the inability to provide the complete track of the target

Active Publication Date: 2021-03-30
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0004] The purpose of the present invention is to propose a filter fusion method for processing the short track obtained by tracking before multi-frame detection, improve the estimation accuracy of the target state, and solve the problem that the tracking method before multi-frame detection cannot provide the complete track of the target And make full use of multi-frame information

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  • A Particle Filter Fusion Method for Tracking Short Tracks Before Multi-Frame Detection
  • A Particle Filter Fusion Method for Tracking Short Tracks Before Multi-Frame Detection

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Embodiment

[0063]The present invention mainly uses a method of computer simulation to verifying, all steps, conclusions are verified correctly on the MATLAB-R2010B. Seefigure 1 The specific implementation steps are as follows:

[0064]Step 1, the variable initialization:

[0065]The initialization variable includes: the total simulation time k = 20; the previous detection tracking process frame number n = 6; target signal to noise ratio SNR = 12dB; detection front tracking processing threshold VT= 13.2847; Detection tracking measurement possible range γ = 72The detection probability of the detection probability of the first, 2, ..., and N frames is 0.876, 0.892, 0.918, 0.910, 0.908, 0.838, 0.910, 0.908, 0.838; radar scan period T = 1s; particle number Ns= 8000; the distance range in the X and Y directions is [1, 150]; the speed range of the X and Y directions is [3.7, 4.4]; target state transfer matrixObservation matrixProcess noise covariance

[0066]Step 2, the particle set initialization:

[0067]Initi...

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Abstract

The invention discloses a particle filter fusion method for tracking short tracks before multi-frame detection, and belongs to the technical field of radar data processing. The present invention further processes the short track obtained by multi-frame detection pre-tracking processing to realize long-term tracking of the target, solves the technical problem that the multi-frame pre-detection tracking method cannot provide complete track information of the target, and iteratively tracks the target The state is estimated in real time, and the target state is filtered and fused using the short track obtained by the multi-frame detection pre-tracking process to improve the accuracy of the target state estimation and make full use of the repeated but not fully utilized in the iterative sliding window. information. Through particle state prediction, it 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, and ensure the continuity of the track.

Description

Technical field[0001]The invention belongs to the field of radar data processing, and in particular, the field of radar micro-target tracking technology.Background technique[0002]It is well known that the increasing mature of radar detection environments, which makes radar in a timely and reliability of micro-targets that are flooded in strong waves become more difficult. Improving radar has important theoretical value and practical significance for detection tracking performance of micro-target.[0003]Detection tracking technology is a technique for detecting tracking in the low signal-to-noise ratio environment. Unlike traditional detection methods, before the test tracking is not announced in single frame, but the detection result and track of the target will be announced after processing multi-frame data. Methods of implementing front tracking techniques include particle filtering, dynamic planning, Hof, etc. The track starting ability of the tracking method based on particle fil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/66G01S13/88
CPCG01S13/66G01S13/88
Inventor 易伟李洋漾李雯黎明孙智李固冲孔令讲崔国龙
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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