%0 Journal Article
%T Infl uence of geometric distortion on SAR Image matching and its correction<br>几何失真对SAR图像匹配的影响及校正方法分析
%A REN Sanhai
%A CHANG Wenge
%A <br>任三孩
%A 常文革
%J 遥感学报
%D 2012
%I 
%X The accuracy of scene matching navigation system can be improved greatly when synthetic aperture radar (SAR) is used. However, geometric distortions of SAR real-time image, which are caused by terrain undulation and atmosphere turbulence etc, decrease the matching performance. By analyzing the causations of geometric distortion, a two-dimension separable correction method is presented, which corrects the distortion in azimuth direction by phase compensation along with the imaging processing, and leaves the distortion in range direction to the image post processing. In the end, an experiment was conducted based on three SAR real-time images of different terrains. Each of the images is simulated by digital elevation model (DEM) and orthography, and then corrected by three different methods. Based on the experimental results, some rules of the correction method selection are acquired.
%K synthetic aperture radar (SAR)
%K image matching
%K geometric correction
%K navigation<br>合成孔径雷达(SAR)
%K 图像匹配
%K 几何校正
%K 导航
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=A41A70F4AB56AB1B&jid=F926358B31AC94511E4382C083F7683C&aid=C8C3724E4E2B01E6D664D868386BA641&yid=99E9153A83D4CB11&vid=7801E6FC5AE9020C&iid=38B194292C032A66&sid=98494933359B55EC&eid=283B38DAD0D068F3&journal_id=1007-4619&journal_name=遥感学报&referenced_num=0&reference_num=11