广域观测圆轨迹环扫SAR成像模式研究

孙兵; 周荫清; 陈杰; 李春升

doi:10.3724/SP.J.1146.2007.00916

广域观测圆轨迹环扫SAR成像模式研究

doi: 10.3724/SP.J.1146.2007.00916

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出版历程
- 收稿日期: 2007-06-11
- 修回日期: 2007-10-26
- 刊出日期: 2008-12-19

Operation Mode of Circular Trace Scanning SAR for Wide Observation

摘要

摘要: 圆轨迹环扫SAR是一种能够实现广域观测的新模式合成孔径雷达，具有高时空分辨率、短重访周期、广域成像的特点，特别是对于低速运动平台，能在短时间内实现对大面积区域的快速观测，观测效率高。该文建立了圆轨迹环扫SAR的运动模型，进而得到SAR回波信号距离模型，在此基础上分析了圆轨迹环扫SAR的信号多普勒特性以及方位分辨率特性，最后探讨了圆轨迹环扫SAR的成像处理方法。计算机仿真结果验证了该文分析结论和成像方法的正确性，圆轨迹环扫SAR是一种可行的广域观测成像模式。
- 合成孔径雷达 /
- 圆轨迹环扫 /
- 广域观测 /
- 成像模式
Abstract: Circular Trace Scanning Synthetic Aperture Radar (CTS-SAR) is a new operation mode radar, which can be used for wide observation. CTS-SAR have the characteristic of high time-space resolution, short repetition visit period and wide observation area. It can observe wide area in a short time with great efficiency for slow platform specially. The moving model and range model of CTS-SAR are advanced, and the Doppler characteristic and azimuth resolution characteristic of CTS-SAR are analyzed base on the above models. Then the imaging method of CTS-SAR is discussed. The computer simulation results validate the analyzed conclusions and the imaging method. CTS-SAR is competent for wide observation.
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