Space target translation compensation method and device based on template matching

Abstract

The invention discloses a space target translation compensation method and device based on template matching, and the method comprises the steps: S01 receiving a radar echo, and carrying out the time-frequency analysis, and obtaining time-frequency data; S02 filtering the time frequency data and then carrying out binarization processing to obtain binary time frequency data; S03 performing preliminary template matching by using a pre-constructed matching template and the binary time-frequency data to obtain all class contour points; S04 calculating the structural similarity between a neighborhood taking the class contour point as the center and the matching template, and screening out all true contour points after removing all false contour points according to the structural similarity; and S05 fitting a trend curve according to the true contour points and carrying out translation parameter estimation to realize space target translation compensation. The method has the advantages of being simple in implementation method, high in efficiency and precision, high in application flexibility and the like.

Description

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

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