A 2-D Fourier Domain Algorithm for StripMap FMCW-SAR Raw Signal Simulation
Ma Bing-qiang①② Yu Bin-bin①② Liu Chang① Wang Yan-fei①
①(Institute of Electronics, Chinese Academy of Science, Beijing 100190, China)
②(Graduate University of the Chinese Academy of Science, Beijing 100039, China)
Abstract：Because of small size, lightweight, inexpensive and high-resolution, recently FMCW-SAR develops rapidly and has a great prospect in the cost-effective civil applications. The system transfer function of StripMap FMCW-SAR is different from that of pulsed SAR, therefore the efficient simulation approaches for pulsed SAR could not directly be applied to FMCW-SAR. Based on the analysis of the StripMap FMCW-SAR signal characteristics, a 2-D Fourier domain algorithm of the raw signal simulation for stripmap FMCW-SAR is proposed. The proposed algorithm computes the range and azimuth integration used in time-domain simulation method efficiently by FFT technique. With respect to the time-domain simulation, the computational load is reduced by the order of O(NaNr/log2(NaNr)). The rationality and effectiveness of the presented algorithm are verified with the simulation.
马兵强, 于彬彬, 刘畅, 王岩飞. 条带FMCW-SAR回波数据的二维频域模拟算法[J]. 电子与信息学报, 2011, 33(2): 375-380.
Ma Bing-Qiang, Yu Bin-Bin, Liu Chang, Wang Yan-Fei. A 2-D Fourier Domain Algorithm for StripMap FMCW-SAR Raw Signal Simulation. , 2011, 33(2): 375-380.
2011, Vol. 33 
