%0 Journal Article
%T A Novel Algorithm for Weak Signals'''' DOA Estimation under Intensive Interferences<br>一种强干扰条件下微弱信号DOA估计的新方法
%A Chai Li-gong
%A Luo Jing-qing
%A <br>柴立功
%A 罗景青
%J 电子与信息学报
%D 2005
%I 
%X A novel algorithm both for restraining intensive interferences and for estimating weak signals' DOA(Direction Of Arrival) information is presented on the basis of uniform linear array. Under the assumption knowing the number and directions of intensive interferences, first, the algorithm forms the beam on the sub-array level with the improved beam-forming method to constrain interferences; then, the algorithm estimates weak signals' DOA information based on all of these weighed sub-arrays. When both the desired signal and the interference are in the same beam, the merit of this algorithm shows higher estimation accuracy than that of high-resolution methods without improving the SNR for weak signal. Both the theoretical analysis and computer simulation indicate that the algorithm is effective.
%K Anti-jamming
%K Beam-forming
%K DOA estimation<br>抗干扰
%K 波束形成
%K DOA估计
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=6E0900F225F7B302&yid=2DD7160C83D0ACED&vid=DB817633AA4F79B9&iid=F3090AE9B60B7ED1&sid=388804B5826A17DB&eid=E36FA098A813D3FB&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=11