Abstract:Considering the contradiction between the azimuth resolution and the swath width for the traditional SAR, a MIMO SAR system with multiple-carrier-frequency LFM waveform is researched. The corresponding geometrical?model is built, and the expressions of the echo signals are derived in detail. A novel imaging algorithm based on the sub-band synthetic technology in frequency domain is proposed. This algorithm which integrates the removing of azimuth ambiguities, the synthesis of the sub-band and the CS imaging can realize 2-D high resolution and wide swath simultaneously. And the improved sub-band synthetic algorithm has more efficiency and practicality than the traditional sub-band synthetic algorithms in time frequency domain. The effectiveness of this method is verified with the theoretical analysis and the computer-based simulations.
邓云凯, 陈倩, 祁海明, 郑慧芳, 刘亚东. 一种基于频域子带合成的多发多收高分辨率SAR成像算法[J]. 电子与信息学报, 2011, 33(5): 1082-1087.
Deng Yun-Kai, Chen Qian, Qi Hai-Ming, Zheng Hui-Fang, Liu Ya-Dong. A High-resolution Imaging Algorithm for MIMO SAR Based on the Sub-band Synthesis in Frequency Domain. , 2011, 33(5): 1082-1087.