%0 Journal Article
%T Robust Estimation of Scattering Center Parameters in Long-Tailed K-Distribution Clutter<br>长拖尾K分布杂波下雷达目标散射中心参数的稳健估计
%A Shi Zhi-guang
%A Zhou Jian-xiong
%A Zhao Hong-zhong
%A Fu Qiang
%A <br>石志广
%A 周剑雄
%A 赵宏钟
%A 付 强
%J 电子与信息学报
%D 2007
%I 
%X When the parameter estimation of Damped Exponentials(DE) based scattering center model is considered in real life situation,the noise is always non-Gaussian and has long-tailed distribution.The estimation error in such noise may be large if the estimator under gauss-noise assumption is used.In this paper,the M-estimation method is used to obtain robust parameter estimation of DE-model in long-tailed clutter.Firstly,the shortcoming of Prony-based M-estimation method is analyzed.Then,other two effective methods to realize M-estimation of DE-model are proposed.A comparative study of these two methods is carried on about their estimation performance.Lastly,Monte-Carlo simulation test is performed to validate the proposed methods.The results show that the two proposed methods both give better estimation results in long-tailed K-Distribution clutter.
%K Radar
%K Long-tailed distribution
%K Damped exponential model
%K M-estimation
%K K-distributed clutter<br>雷达
%K 长拖尾分布
%K 衰减指数模型
%K M估计
%K K分布杂波
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=75DDD4744253A05E3A112666C843E2EB&yid=A732AF04DDA03BB3&vid=771469D9D58C34FF&iid=59906B3B2830C2C5&sid=BAA1C1C041175B97&eid=57915694948F9634&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=10