摘要
文章分析了VHF/UHF波段合成孔径雷达的成像特点及其对成像算法的要求,提出用高阶相位滤波来消除距离与方位向之间的高阶相位耦合,用非线性CS技术来消除距离变化引入到二次距离压缩中的残余相位误差,从而得到了一种适用于VHF/UHF波段SAR成像的改进型NLCS算法。通过仿真验证了算法的有效性,该算法对于VHF/UHF波段SAR成像具有较高的实用价值。
The imaging features of VHF/UHF SAR and their demands for the imaging algorithm are analyzed. A high-order phase filter is used to eliminate the high-order phase coupling between the range and the azimuth, the nonlinear CS algorithm is used to remove the residual phase error of the secondary range compression（SRC） due to the range-dependent variation, and a modified NLCS algorithm for VHF/UHF SAR is gained. Through the simulation test, the algorithm is verified and the performance of the algorithm is discussed briefly. The algorithm is of very high practical value for VHF/UHF SAR imaging.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
北大核心
2009年第3期417-420,共4页
Journal of Hefei University of Technology：Natural Science
