A method and device for spatial object translation compensation based on template matching

Abstract

The invention discloses a template matching-based spatial object translation compensation method and device. The steps of the method include: S01. receiving radar echoes and performing time-frequency analysis to obtain time-frequency data; S02. filtering the time-frequency data Perform binary processing to obtain binary time-frequency data; S03. Use a pre-built matching template to perform preliminary template matching with the binary time-frequency data to obtain all class contour points; S04. Calculate the class contour points as According to the structural similarity between the neighborhood of the center and the matching template, all true contour points are screened out after removing all false contour points according to the structural similarity; S05. Fitting a trend curve according to the true contour points And the translation parameter estimation is carried out to realize the translation compensation of the space target. The invention has the advantages of simple realization method, high efficiency and precision, strong application flexibility and the like.

Description

technical field [0001] The present invention relates to the technical field of spatial target motion compensation, and in particular, to a method and device for spatial target translation compensation based on template matching. Background technique [0002] Space targets are often accompanied by decoys during flight, which brings great difficulties to radar target recognition. Traditional recognition methods based on target characteristics are difficult to identify the real target from the decoy, so it is necessary to improve the recognition accuracy of the target from the micro-motion information of the target. The form of target fretting can be divided into rotation, conical rotation, swing, etc. The extraction and characteristic research of fretting features in the prior art are mostly based on fretting. However, when the actual space target moves, translation and There are two kinds of motions in fretting, and translation will destroy the structure of the micro-Doppler...

AI Technical Summary

Problems solved by technology

However, when this type of method performs higher-order translation compensation, it needs to be used in combination with other algorithms, and it will also bring about the problem of reduced accuracy.

[0013] To sum up, all kinds of spatial object translation compensation methods in the existing technology have their own defects, either high complexity, low efficiency, low precision, long delay, and it is impossible to balance the efficiency and accuracy of compensation at the same time.

Images