Ground Moving Target Imaging of Synthetic Aperture Radar Based on Improved Range History Fitting Method

Abstract

In this paper, aiming at the imaging and estimation of accelerated moving targets with range and azimuth velocity and acceleration, the influence of high-order phase of echo is analyzed, and the imaging formula of moving target is derived. The fourth-order polynomial Fourier transform is used to improve the former method of fitting the range history directly, whose higher-order coefficient is not accurate. Finally, an example is given to demonstrate the effectiveness of the proposed method.