%0 Journal Article
%T SPATIAL SPECTRUM ESTIMATION OF COHERENT SOURCES IMP_1NGING ON NONUNIFORM ARRAYS<br>非均匀阵列上相干信号的空间谱估计
%A Lu Ming
%A Bao Zheng
%A <br>路鸣
%A 保铮
%J 电子与信息学报
%D 1991
%I 
%X The problem of bearing estimation of coherent signals impinging on an array of arbitrary geometry is studied. Two methods are developed. The first one synthesizes the obser-ved array data imo the outputs of a linear uniform array and then processes them via cnnventional techniques such as spatial smoothing etc.; the second method is based on the invariant subspace rotation operation which is equivalent to the translational displacement of the array, linearly in-dependent signal vectors are obtained thereby to span completely the signal subspace. As com-pared with the conventional processing techniques, the method based on invariant subspace rotation does not lead to an effective decrease in aperture size and therefore a decrease in re-solution capability. The computer simulations are conducted to demonstrate the effectiveness of the presented methods.
%K Array signal processing
%K Spatial spectrum estimatiton
%K Direction finding
%K Coherent signals<br>阵列信号处理
%K 空间谱估计
%K 测向
%K 相干信号
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=D0CEAC297D022370&yid=116CB34717B0B183&vid=FC0714F8D2EB605D&iid=CA4FD0336C81A37A&sid=CA4FD0336C81A37A&eid=708DD6B15D2464E8&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=16