%0 Journal Article
%T Direction-of-Arrival Estimation for Wideband Cyclostationary Signals Basing on Multi-Cycle Focusing<br>基于多循环频率聚焦的宽带循环平稳信号阵列测向方法
%A Liu Zhang-meng Huang Zhi-tao Zhou Yi-yu
%A <br>刘章孟
%A 黄知涛
%A 周一宇
%J 电子与信息学报
%D 2009
%I 
%X The information within different cyclo-frequencies about the wideband cyclostationary signals may be complementary to each other, whether and to what degree can they be exploited synthetically to improve the Direction-Of-Arrival (DOA) performance with arrays for wideband cyclostationary signals owns much significance, especially when the Signal-to-Noise Ratio (SNR) is low. This paper analyzes the spectral correlation of the array output at different cyclo-frequencies, and verifies that the errors of their estimates from finite sampling are independent to each other, which demonstrates the possibility of multi-cycle synthesization. An effective way of multi-cycle focussing is also proposed to realize the process of synthesization. Simulation results show that the proposed multi-cycle focusing method greatly improved the DOA estimation performance for wideband cyclostationary signals when the SNR is low.
%K Array signal processing
%K Direction-Of-Arrival (DOA) estimation
%K Cyclostationarity
%K Wideband signal<br>阵列信号处理
%K 波达方向估计
%K 循环平稳
%K 宽带信号
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=B89D4A5197A7C3F9A58A65C35A8794C6&yid=DE12191FBD62783C&vid=4AD960B5AD2D111A&iid=F3090AE9B60B7ED1&sid=3694286FAF8D37E3&eid=0AC9783FD6C67AB3&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=13