%0 Journal Article
%T Improving Spatial WVD and Hough Transform Based Algorithm for Near-Field Sources Parameter Estimation and Performance Analysis<br>改进的基于Spatial WVD和Hough变换的近场信源参量估计及性能分析
%A YANG Zhi-wei
%A LIAO Gui-sheng
%A <br>杨志伟
%A 廖桂生
%J 光子学报
%D 2007
%I 
%X The array snap shot is similar with linear frequency modulation (LFM) signal when scatter point located in the near-field,so the near-field sources parameter can be deduced by estimating chirp rate and initial frequency of LFM. A method is proposed propose which using spatial-frequency joined weight WVD for cross-product terms suppressing at first,and taking edge detecting in image domain followed by applying Hough transformation for line detecting and eliminating cross-product terms at the most, then giving the sources parameter estimation, such as direction-of-arrival (DOA) and range by using least square algorithm.Advantages of this approach are that cross-product terms are suppressed markedly and accurate source DOA/rang estimates is obtained without search of a multi-dimensional space.The effectiveness of the algorithm is proved by extensive simulation.
%K DOA estimation
%K Near-field sources
%K Spatial WVD
%K Hough transform<br>DOA估计
%K 近场信源
%K Spatial
%K WVD
%K Hough变换
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=9F6139E34DAA109F9C104697BF49FC39&aid=BDB96573977FBE33F289CC9D008B74E6&yid=A732AF04DDA03BB3&vid=933658645952ED9F&iid=94C357A881DFC066&sid=AB8B0EE7E1A96CB2&eid=2BCD2FED7562E194&journal_id=1004-4213&journal_name=光子学报&referenced_num=0&reference_num=10