文献类型：期刊文献

中文题名：Source localization using a non-cocentered orthogonal loop and dipole (NCOLD) array

英文题名：Source localization using a non-cocentered orthogonal loop and dipole (NCOLD) array

作者：Liu Zhaoting[1];Xu Tongyang[2]

机构：[1]Shaoxing Univ, Dept Elect Engn, Shaoxing 312000, Peoples R China;[2]Shanxi Univ Finance & Econ, Sch Informat Management, Taiyuan 030006, Peoples R China

年份：2013

卷号：26

期号：6

起止页码：1471

中文期刊名：中国航空学报：英文版

外文期刊名：CHINESE JOURNAL OF AERONAUTICS

收录：SCI-EXPANDED(收录号：WOS:000329111700014)、CSTPCD、、EI(收录号：20140217184079)、Scopus(收录号：2-s2.0-84891626999)、WOS、CSCD、CSCD2013_2014

基金：This study was co-supported by the Scientific Research Fund of Zhejiang Provincial Education Department (No. Y201225848), and the Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi (No. 2013124).

语种：英文

中文关键词：矢量传感器阵列;声源定位;偶极子;环和;正交;COLD;定位精度;非偏振

外文关键词：Array signal processing; Direction of arrival (DOA) estimation; Electromagnetic vector-sensor array; Polarization; Source localization

中文摘要：A uniform array of scalar-sensors with intersensor spacings over a large aperture size generally offers enhanced resolution and source localization accuracy,but it may also lead to cyclic ambiguity.By exploiting the polarization information of impinging waves,an electromagnetic vector-sensor array outperforms the unpolarized scalar-sensor array in resolving this cyclic ambiguity.However,the electromagnetic vector-sensor array usually consists of cocentered orthogonal loops and dipoles(COLD),which is easily subjected to mutual coupling across these cocentered dipoles/loops.As a result,the source localization performance of the COLD array may substantially degrade rather than being improved.This paper proposes a new source localization method with a non-cocentered orthogonal loop and dipole(NCOLD)array.The NCOLD array contains only one dipole or loop on each array grid,and the intersensor spacings are larger than a half-wavelength.Therefore,unlike the COLD array,these well separated dipoles/loops minimize the mutual coupling effects and extend the spatial aperture as well.With the NCOLD array,the proposed method can effciently exploit the polarization information to offer high localization precision.

外文摘要：A uniform array of scalar-sensors with intersensor spacings over a large aperture size generally offers enhanced resolution and source localization accuracy, but it may also lead to cyclic ambiguity. By exploiting the polarization information of impinging waves, an electromagnetic vector- sensor array outperforms the unpolarized scalar-sensor array in resolving this cyclic ambiguity. However, the electromagnetic vector-sensor array usually consists of cocentered orthogonal loops and dipoles (COLD), which is easily subjected to mutual coupling across these cocentered dipoles/loops. As a result, the source localization performance of the COLD array may substantially degrade rather than being improved. This paper proposes a new source localization method with a non-cocentered orthogonal loop and dipole (NCOLD) array. The NCOLD array contains only one dipole or loop on each array grid, and the intersensor spacings are larger than a half-wave-length. Therefore, unlike the COLD array, these well separated dipoles/loops minimize the mutual coupling effects and extend the spatial aperture as well. With the NCOLD array, the proposed method can efficiently exploit the polarization information to offer high localization precision. (C) 2013 Production and hosting by Elsevier Ltd. on behalf of CSAA & BUAA.