FM-CW SAR距离-多普勒成像算法研究  

Study on Imaging Algorithm of FM-CW SAR

作　　者：耿淑敏[1] 江志红[1] 程翥[1] 皇甫堪[1] 

机构地区：[1]国防科学技术大学电子科学与工程学院信号处理实验室,长沙410073

出　　处：《电子与信息学报》2007年第10期2346-2349,共4页Journal of Electronics & Information Technology

摘　　要：调频连续波(FM-CW)合成孔径雷达因其体积小、重量轻、低成本及分辨率高等特点越来越受到关注。该文详细推导了调频连续波(FM-CW)体制下去调频FM-CW SAR信号模型,对FM-CW SAR的特有问题如RVP,斜置,距离走动现象进行了深入研究,提出了改进的去调频FM-CW SAR的距离-多普勒成像算法。通过理论推导及仿真实验,验证了模型和算法的可行性与正确性。There is a growing interest in the Frequency Modulated Continuous Wave （FM-CW） SAR for its small cubage, light weight, cost-effective and high resolution. In this paper, the principle of the de-chirped FM-CW SAR is analyzed in detail, the phenomena, for example, Residual Visual Phase （RVP）, Slope, range walk are discussed deeply, and the improved range Doppler imaging algorithm for the de-chirped FM-CW SAR is presented. The deduction and the simulation prove the algorithm is feasible and correct.

关 键 词：SAR FM—CW 距离-多普勒成像算法 RVP 斜置 

分 类 号：TN957.52[电子电信—信号与信息处理]