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Dynamic planning pre-detection tracking method for heterogeneous clutter background

A non-uniform clutter and dynamic planning technology, applied in radio wave measurement systems, instruments, etc., to reduce false alarms, suppress clutter, and quickly detect tracks

Active Publication Date: 2014-09-10
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to improve the design of a dynamic programming tracking before detection method for non-uniform clutter background, so as to achieve non-uniform clutter background. The purpose of improving the accuracy of target detection, improving the stability of the system, and effectively suppressing the false alarm and missed detection of the radar in the background of clutter

Method used

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  • Dynamic planning pre-detection tracking method for heterogeneous clutter background
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  • Dynamic planning pre-detection tracking method for heterogeneous clutter background

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Embodiment Construction

[0036] The present invention mainly adopts the method of simulation test for verification, and all steps and conclusions are verified correctly on MATLAB R2011b. The specific implementation steps are as follows:

[0037] Step 1. Initialize system parameters including: data plane size 50×50, number of processing frames K=6, number of state transitions q=4, threshold V calculated by Monte Carlo simulation test T =33.0761, the OS CFAR reference window length R=20, the ordered statistic is selected as the r=15th, the constant α OS =6.857;

[0038] Step 2. Receive the echo signal of the first frame, take the square of the echo signal amplitude of each resolution unit as the measurement value of the resolution unit; record the measurement value of this row as z 1 ,z 2 ,…,z 50

[0039] Step 3. Eliminate the target measurement value in the measurement value of the resolution unit in the first row of the first frame to obtain the clutter measurement value;

[0040] Step 3.1, calc...

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Abstract

The invention discloses a dynamic planning pre-detection tracking method for a heterogeneous clutter background, belongs to the technical field of radar target detection, and in particular relates to the technical field of faint target radar detection under the heterogeneous clutter background. According to the dynamic planning pre-detection tracking method for the heterogeneous clutter background, the position of sudden change of clutter power is judged first after receiving the radar data, clutters of different powers are respectively normalized, then the optimal target track is selected, and thus the clutters can be effectively inhibited in the absence of the information of the position of sudden change of the clutters and the prior power information of the clutters in two sides of the position of sudden change, the target track can be quickly detected, and the false alarm and neglected detection can be reduced.

Description

technical field [0001] The invention belongs to the technical field of radar target detection, in particular to the technical field of radar detection of weak targets under the background of non-uniform clutter. Background technique [0002] The dynamic programming tracking before detection algorithm is an effective weak target tracking method. It does not perform threshold detection in a single frame, and directly uses multi-frame joint processing of radar echo data, and searches all possible tracks through the accumulation of value functions, thereby estimating The true state of the target. It is easy to implement and can handle weak maneuvering targets, and has been widely used in radar tracking, computer vision and other fields. [0003] The dynamic programming detection-before-tracking algorithm assumes that the background clutter is uniformly distributed, however, in actual radar scenarios, if the dominant interference comes from clutter instead of thermal noise or ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41G01S7/36
CPCG01S7/36G01S7/414
Inventor 孔令讲姜海超李小龙刘睿易伟崔国龙汪兵杨晓波
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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