%0 Journal Article
%T Clutter Rejection Method in SAR Radiometric Calibration<br>SAR辐射定标中的地物杂波抑制方法
%A WANG Yi-ding
%A TU Guo-fang
%A HONG Jun
%A <br>王一丁
%A 涂国防
%A 洪峻
%J 遥感学报
%D 2005
%I 
%X SAR radiometric calibration accuracy is influenced by background clutter. In order to obtain high radiometric calibration accuracy, certain signal and clutter ratio (SCR) requirement must be satisfied or the SCR should be increased by clutter rejection method. This paper studies Active Coded Radiometric Calibration Technique (ACRCT) of SAR and a clutter rejection method based on azimuth signal phase shifter coding and presents the inversion of rang signal frequency modulation. We adopted Range-Doppler imaging algorithm to simulate reference point target and distributed clutter. We also studied SAR radiometric calibration accuracy by peak value method. Experiment results prove that ACRCT could effectively restrain the influence of background clutter signal and improve the precision of radiometric calibration of SAR.
%K SAR
%K radiometric calibration
%K clutter
%K image formation
%K peak value method<br>SAR
%K 辐射定标
%K 杂波
%K 成像
%K 峰值方法
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=A41A70F4AB56AB1B&jid=F926358B31AC94511E4382C083F7683C&aid=F2DDD72754F1D970&yid=2DD7160C83D0ACED&vid=9CF7A0430CBB2DFD&iid=94C357A881DFC066&sid=B34BDD6A690A04C0&eid=E5D85F291CED2DA6&journal_id=1007-4619&journal_name=遥感学报&referenced_num=1&reference_num=11