An Improved Wavenumber Domain Algorithm for Circular SAR and Cylindrical Reconstruction Areas
In this paper,an improved wavenumber domain imaging algorithm is proposed for circular synthetic aperture (CSAR) data taken in stripmap mode. The proposed algorithm allows to reconstruct an image on a cylindrical surface. The range trajectory is approximated with the fourth-order terms expansion and the echo signal is transformed to the wavenumber domain by using a principle of stationary phase.Based on the spectrum,the interpolation of the algorithm is deduced,and the residual phase is compensated. The valid aperture length of the proposed algorithm is greatly increased,comparing with the algorithm based on range expanded to quadratic terms. The simulation results validate the high-performance of the improved wavenumber domain imaging algorithm.
circular synthetic aperture data wavenumber domain algorithm principle of stationary phase
Kou Leilei Wang Xiaoqing Chong Jinsong Xiang Maosheng
National Key Laboratory of Microwave Imaging Technology,Institute of Electronics,Chinese Academy of National Key Laboratory of Microwave Imaging Technology,Institute of Electronics,Chinese Academy of
国际会议
2009 2nd Asian-Pacific Conference on Synthetic Aperture Radar(第二届亚太合成孔径雷达会议)
西安
英文
67-70
2009-10-26（万方平台首次上网日期，不代表论文的发表时间）