%0 Journal Article
%T Space-Variant Motion Compensation in Ultra-high Resolution Airborne Spotlight SAR<br>超高分辨率机载聚束SAR空变运动误差校正
%A Han Bing
%A Ding Chi-biao
%A Liang Xing-dong
%A Li Dao-jing
%A <br>韩冰
%A 丁赤飚
%A 梁兴东
%A 李道京
%J 电子与信息学报
%D 2009
%I 
%X The compensation for space-variant motion errors is one of the main issues in ultra-high resolution airborne SAR imaging. This paper first discusses the characteristics of space-variant motion errors of airborne spotlight SAR, and deduces the quantificational relationship between space-variant motion errors and SAR imaging parameters such as scan angle, size of illuminated scene and grazing angle. Then, it presents a comprehensive processing scheme for motion compensation of high resolution airborne spotlight SAR, which is based on the sub-patches processing and a new method of range resample using chirp disturbance. This scheme can make up for the deficiency of traditional process and deals well with severe space-variant motion errors in ultra-high resolution imaging. Finally, computer simulations prove the validity of the scheme.
%K Airborne spotlight SAR
%K Ultra-high resolution
%K Space-variant motion error
%K Range resample
%K Sub- patches<br>机载聚束SAR
%K 超高分辨率
%K 空变运动误差
%K 距离重采样
%K 图像分块
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=C9811EB8A37E3EBD623B1011977D60E8&yid=DE12191FBD62783C&vid=4AD960B5AD2D111A&iid=94C357A881DFC066&sid=0522AC581E488FBF&eid=87352E668344FB84&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=8