An Efficient Imaging Processing Method for Bistatic Synthetic Aperture Radar in Wavenumber Domain

Abstract

The invention provides a high-efficiency imaging processing method in the wavenumber domain of a bistatic synthetic aperture radar, which belongs to the technical field of radar detection and imaging. The invention is used for improving the imaging processing efficiency of the bistatic synthetic aperture radar. Firstly, according to the geometric configuration of the bistatic radar, the echo signal model of the bistatic synthetic aperture radar is obtained; secondly, using the relationship between the spatial spectrum processing efficiency and the rotating coordinate system, the echo imaging under different rotating coordinate systems is obtained processing efficiency; then, use the relationship between the rotation angle and processing efficiency to calculate the most efficient rotation angle; finally, establish a rotating coordinate system based on the most efficient rotation angle to project the echo data into the spatial spectrum domain, and use two-dimensional FFT Efficient imaging processing to achieve your goals. According to the relationship between the rotation angle of the bistatic synthetic aperture radar and the efficiency of spatial spectrum processing, the method of the invention improves the imaging processing efficiency of the bistatic synthetic aperture radar by solving the efficient echo projection rotation angle.

Description

Technical field[0001]The present invention belongs to the field of radar detection and imaging technology, and more particularly to a double-based synthetic aperture radar wave digital domain high-efficiency imaging processing method.Background technique[0002]Radar imaging has an important value in natural disaster monitoring and pairing. Dual-based synthetic aperture radar is separated by the transceiver platform, making observations more flexible, and has been widely studied in various efficiency potentials of target detection, anti-interference and high resolution imaging. However, during the two-based synthetic aperture thunder imaging, its imaging processing efficiency remains to be improved.[0003]In the prior art, there is a method of achieving the target reconstruction, however, the method is relatively time consuming because it is necessary to traverse the echo trajectory of each target. In addition, there is also a method of applying compressed sensing techniques to radar i...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of high computational complexity and low efficiency in the traditional bistatic synthetic aperture radar imaging processing method, and propose a high-efficiency imaging processing method of bistatic synthetic aperture radar wavenumber domain

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