西安电子科技大学学报（自然科学版）2016，Vol.43Issue(5)：18-23,62,7.DOI:10.3969/j.issn.1001-2400.2016.05.004
地球同步轨道SAR方位空变校正方法
Azimuth variation correction method for geosynchronous synthetic aperture radar
摘要
Abstract
Aimed at the severe azimuth variation caused by the ultralong synthetic aperture time and very large scene in geosynchronous synthetic aperture radar ( GEOSAR ) , this paper develops an azimuth variation correction method for GEOSAR . The method firstly obtains the two‐dimensional spectrum by the method of series reversion ( MSR) . The Doppler and azimuth positions of the point target in the two‐dimensional spectrum are serious coupled . The singular value decomposition ( SVD) can be introduced to separate the Doppler position from the position of the point target . Subsequently , Stolt interpolation is used twice to compensate the high‐order phase terms . Thus , a focused scene is obtained . Finally , simulation for scene targets validate the proposed method . All the targets in the scene are focused well .关键词
地球同步轨道合成孔径雷达/方位空变/奇异值分解/方位非线性变标Key words
geosynchronous synthetic aperture radar(GEO SAR)/azimuth variation/singular value decomposition(SVD)/azimuth nonlinear chirp scaling(ANCS)分类
自科综合引用本文复制引用
陈溅来,张锐,孙光才,景国彬,邢孟道..地球同步轨道SAR方位空变校正方法[J].西安电子科技大学学报（自然科学版）,2016,43(5):18-23,62,7.基金项目
国家自然科学基金资助项目（61301292）；空间测控通信创新探索基金资助项目 （）
