基于分数阶傅里叶变换的两步运动补偿CS算法  

Two-step motion compensation combined with CS algorithm based on fractional Fourier transform

作　　者：谭鸽伟[1] 潘光武[1] 林薇[1] 

机构地区：[1]华侨大学信息科学与工程学院,福建厦门361021

出　　处：《计算机应用研究》2015年第1期89-92,共4页Application Research of Computers

基　　金：福建省自然科学基金资助项目(2013J01242)

摘　　要：针对传统的基于傅里叶变换的两步运动补偿SAR成像算法在处理非平稳运动误差时效果不显著的问题,提出了基于分数阶傅里叶变换(Fr FT)的两步运动补偿CS算法,以期消除距离向运动误差的影响,从而获得高质量的SAR图像。仿真结果和基于实测SAR数据的成像结果都表明,所提算法能很好地消除距离向运动误差的影响。Pointing to the problem that the effect of error elimination was not obvious in processing non-stationary motion error using the traditional FFT based two-step motion compensation combined with SAR imaging algorithm,this paper proposed two- step motion compensation combined with CS algorithm based on the fractional Fourier transform（FrFF） ,which could eliminate the influence of range motion error, so as to obtain high quality SAR images. The simulation results and the imaging results of real SAR data show that the proposed algorithm can eliminate the influence of range motion error effectively.

关 键 词：分数阶傅里叶变换 运动误差 两步运动补偿 CS成像算法 高分辨率SAR图像 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]