%0 Journal Article
%T A New DOA Estimator Based on Alternating Projection and Its Application in VHF Radar<br>基于交替投影的DOA估计方法及其在米波雷达中的应用
%A Zhao Guang-hui
%A Chen Bai-xiao
%A Dong Mei
%A <br>赵光辉
%A 陈伯孝
%A 董玫
%J 电子与信息学报
%D 2008
%I 
%X In the presence of multi-path propagation, it is quite difficult for VHF radar to measure the altitude of a low elevation target. In this paper, a new alternating projection algorithm is proposed to estimate the DOA of the target. By projecting the correlation matrix of the target echo into different signal subspaces, this method can be used to estimate accurately the directions of both the direct wave and the reflected wave, and hence the altitude of the target is known precisely. Results of both computer simulation and the real data from some VHF radar demonstrate the validity of the new algorithm. The Monte-Carlo experiment proves that the performance of the new algorithm is better than that of the temporal-spatial sequential ML algorithm.
%K VHF radar
%K Altitude measurement
%K Multi-path
%K DOA
%K Alternating projectionn<br>米波雷达
%K 测高
%K 多径
%K 波达方向
%K 交替投影
%K 交替投影
%K 估计方法
%K 米波雷达
%K 应用
%K VHF
%K Radar
%K Application
%K Alternating
%K Projection
%K Based
%K 性能
%K 似然方法
%K 时空
%K 空测
%K 处理结果
%K 试验
%K 有效性
%K 实测数据
%K 算机仿真
%K 低空目标
%K 反射波
%K 直达波
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=3125D205029B82641A62142A1695752F&yid=67289AFF6305E306&vid=340AC2BF8E7AB4FD&iid=CA4FD0336C81A37A&sid=A1266CF37D675CF1&eid=0DEB7A8A66C33AAD&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=7