雷达学报Issue(3)：319-325,7.DOI:10.3724/SP.J.1300.2013.13044
滑动聚束FMCW-SAR的子孔径波数域成像算法
Subaperture Wavenumber Domain Imaging Algorithm for Sliding Spotlight FMCW-SAR
摘要
Abstract
In this paper, the geometry of sliding spotlight FMCW-SAR is analyzed, the echo model is set up, and the two-Dimensional (2-D) spectrum of its echo signal is derived. From its signal characteristics, a subaperture wavenumber domain algorithm that corrects the Doppler frequency shift effect caused by the motion within the sweep is presented. The algorithm using azimuth resolution can acquire images better than those obtained in the stripmap case using subaperture coherent recombination. Thus, for an imaged area larger than that achieved in the spotlight operation, the subaperture images are combined. The echo model and the effectiveness of the proposed algorithm are analyzed and verified with the simulation results.关键词
调频连续波合成孔径雷达(FMCW-SAR)/滑动聚束/子孔径Key words
Frequency Modulated Continuous Wave Synthetic Aperture Radar (FMCW-SAR)/Sliding spotlight/Subaperture分类
信息技术与安全科学引用本文复制引用
马兵强..滑动聚束FMCW-SAR的子孔径波数域成像算法[J].雷达学报,2013,(3):319-325,7.基金项目
国家高技术研究发展计划(863计划)(2008aa121804)资助课题 （863计划）
