单周波和双周波信号用于冲激SAR成像的性能分析
THE ANALYSIS OF SINGLE CYCLE AND DOUBLE CYCLE SIGNALS USED IN IMPCLSE SAR IMAGING
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摘要: 该文分析了冲激SAR成像的特点,在发射和接收均为超宽带信号、大方位积累角的情况下,推导出了冲激信号SAR方位分辩率的解析表达式,并在此基础上对单周波和双周波信号用于冲激SAR成像的方位分辨率、距离分辨率进行了对比和分析,得到一些有用的结论。最后,通过仿真实验验证了这些结论的正确性。Abstract: This paper analyzes the special characteristics of impulse signal S AR ,in the process of imaging. In condition of sending, receiving UWB signal with big accumulating angle, the formulation of azimuth resolution is deduced. Single cycle and double cycle signals used in impulse SAR imaging are analyzed and contrasted. Some conclusions are given. Finally, they are proved to be right by the simulation results.
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J.W.MeCorkle,Focusing of synthetic aperture udora widebaud data,IEEE International Conference on Systens Engineering Fairborn,OH.August 1991:1-5.[2]吕彤光,等.冲微脉冲合成孔径雷达(SAR)成像算法,系统工程与电子技术,1998,20(12).5-10.[3]匡纲要,UWB雷达目标建模和信号设计,(博士论文},长沙,国防科技大学,1996,7-13. -
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