信阳师范学院学报（自然科学版）Issue(1)：119-122,4.DOI:10.3969/j.issn.1003-0972.2014.01.031
非均匀阵元噪声条件下的近场声源定位
Localization of Near-Field Sources in the Presence of Non-uniform Sensor Noise
摘要
Abstract
To solve the problem of the declined performance of conventional maximum likelihood method in loca -ting multiple near-field sources in the context of non-uniform spatial noise , the near-field signal model based on planar sensor array was firstly constructed and then the maximum likelihood localization method was derived in details to ob -tain the values of the azimuth and distance of sound sources .Moreover , the ant colony optimization algorithm for con-tinuous space ( ACOCS) was employed to further reduce the high computational complexity incurred in the multi -dimen-sional search process of the deduced maximum likelihood localization method .Simulations were conducted to validate the feasibility and efficiency of the proposed method .Simulation results showed that the proposed method has a higher estimation accuracy than the conventional maximum likelihood method under the lower mean squared error of both azi -muth estimation and distance estimation , and can approach their respective Cramer-Rao Bound ( CRB) at high signal-to-noise ratio(SNR).关键词
近场源/定位/最大似然估计/连续空间蚁群优化算法/克拉美-罗界Key words
near-field source/localization/maximum likelihood estimation/ant colony optimization for continu-ous space/cramer-Rao Bound分类
信息技术与安全科学引用本文复制引用
侯云山,薛琳,金勇..非均匀阵元噪声条件下的近场声源定位[J].信阳师范学院学报（自然科学版）,2014,(1):119-122,4.基金项目
国家自然科学基金项目（U1204611）；河南省基础与前沿科技计划立项项目 （）
