%0 Journal Article
%T A Method of Based on Sub-aperture Autofocus to Estimate the High-frequency Motion-error and Compensation<br>一种基于子孔径自聚焦的高频运动误差估计和补偿方法
%A Zhang Shuang-xi
%A Sun Guang-cai
%A Zhou Feng
%A Liu Yan-yang
%A Xing Meng-dao
%A <br>张双喜
%A 孙光才
%A 周峰
%A 刘艳阳
%A 邢孟道
%J 电子与信息学报
%D 2010
%I 
%X With the traditional motion compensation methods, the low-frequency motion-error can be completely compensated during SAR imaging process in the theory. But the high-frequency motion-error can’t be estimated and compensated. So when the platform of SAR system is not stable, the high-resolution imagery is hardly obtained. In the paper, a new compensation method is proposed to solve this problem—compensating the high-frequency motion-error based on sub-aperture autofocus after traditional motion compensation. With this new method, not only the imaging results are greatly improved, also the operation quantity?is greatly cut down. The experiment results using both simulated data and measured data validate the effectiveness of the method for the compensation of high-frequency motion-error.
%K Synthetic Aperture Radar (SAR)
%K Motion compensation
%K Phase Grad Autofocus (PGA)
%K Sub-aperture<br>合成孔径雷达
%K 运动补偿
%K PGA
%K 子孔径
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=9C7FDCF3F12674D8170F588329DC6CDB&yid=140ECF96957D60B2&vid=9971A5E270697F23&iid=59906B3B2830C2C5&sid=6432D89A954E0EE8&eid=EAEB02CD348FC8D1&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=13