Target group motion feature extraction method and device based on optimal path method

Abstract

The invention relates to a target group motion feature extraction method and device based on an optimal path method, computer equipment and a computer readable storage medium, and the method comprises the steps: carrying out the one-dimensional range profile imaging of a multi-frame echo signal of a target group, and carrying out the motion compensation; estimating the position and amplitude of each scattering center by adopting a super-resolution parameter estimation method; forming a scattering center sequence by using the estimated scattering center positions, and obtaining a change track of each scattering center in the one-dimensional range profile history graph by using an optimal path method; based on function fitting, calculating separation speed characteristics of each target relative to the reference target. The method can accurately realize target group separation speed extraction, and is especially suitable for motion feature extraction of a multi-target separation scene.

Description

technical field [0001] The present invention relates to the technical field of target detection and recognition, in particular to a method and device for extracting motion features of target groups based on the optimal path method, computer equipment, and a computer-readable storage medium. Background technique [0002] There are various forms of target feature information. Due to the differences in size, shape and motion, the scattering centers in one-dimensional and two-dimensional radar images have obvious differences in the number, position and intensity of spatial distribution. These Difference is one of the reliable basis for target detection and recognition. Therefore, broadband radar technology can be used to extract the features of the scattering information of the one-dimensional range image of multiple targets (real and false targets), and obtain a more robust feature combination for identification. According to the different radar echo information analyzed, the ...

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Problems solved by technology

[0003]At present, for target groups, especially for multi-target separation and collision scenarios, the traditional motion feature extraction method uses the peak method to extract the position and amplitude of the scattering center, which is affected by the Influenced by bandwidth and resolution, the scattering center proposed according to the maximum intensity is the superposition of multiple scattering centers, so the parameter estimation of the scattering center is inaccurate; secondly, in the scattering center correlation method, the traditional image edge extraction method is vulnerable to the signal-to-noise ratio Influenced by the proposed scattering center, the position of the proposed scattering center changes drastically, and an effective scattering center change curve cannot be formed

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