%0 Journal Article
%T A Means of Improving Accuracy of Positioing for Ocean SAR<br>一种提高海洋SAR定位精度的方法
%A Hao ShengYong
%A Wang XiaoQing
%A Cheng XinQing
%A Zhu MinHui
%A <br>郝胜勇
%A 王小青
%A 盛新庆
%A 朱敏慧
%J 电子与信息学报
%D 2005
%I 
%X Estimation of Doppler central frequency has an important effect to accuracy of fixed position in the fixing approach with no reference points for ocean SAR. The effect of Signal-Noise-Ration (SNR) to the estimation of Doppler central frequency has been studied using theoretical method and simulation technique, and results are given in curves. Based on above results, a Doppler measurement mode is adopted in the design of ocean SAR. Compared to common imaging mode, this mode increases SNR of ocean echo by decreasing the bandwidth, then accuracy of fixed position can be improved.
%K Position for ocean SAR
%K Estimation of Doppler central frequency
%K SNR<br>海洋SAR定位
%K 多普勒中心频率估计
%K 信噪比
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=AFE108CC5219076E&yid=2DD7160C83D0ACED&vid=DB817633AA4F79B9&iid=5D311CA918CA9A03&sid=E5572679EEAEEC9C&eid=DB29DCDE63A11F6A&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=6