Abstract:To overcome the shortcomings of the conventional method of SAR moving target detection and imaging based on the Fractional Fourier Transform(FrFT), a modified method, which combines filtering in fractional Fourier domain, reassigned spectrogram and CLEAN, is presented for the detection, parameter estimation and imaging of moving targets. This method is able to estimate precisely the initial Doppler frequency and the Doppler centroid, and to distinguish between multiple targets lying in the same line in the time-frequency plane. The transform formulas between FrFT numeral results and Doppler parameters are also given in the paper. Simulated results prove the validity of the approach.
邓彬; 秦玉亮; 王宏强; 黎湘. 一种改进的基于FrFT的SAR运动目标检测与成像方法[J]. 电子与信息学报, 2008, 30(2): 326-330 .
Deng Bin; Qin Yu-liang; Wang Hong-qiang; Li Xiang. A Modified Method of SAR Moving Target Detection and Imaging Based on Fractional Fourier Transform. , 2008, 30(2): 326-330 .