一种全空域无源定位的传声器阵列  

A Novel Microphone Array for Aerial Acoustic Passive Location

作　　者：王学青[1] 时银水[1] 朱岩[1] 

机构地区：[1]防空兵指挥学院,河南郑州450052

出　　处：《电声技术》2006年第2期4-6,11,共4页Audio Engineering

摘　　要：四元平面方阵是最简单的半空域无源定位传声器阵列,但其在复杂环境中的定位精度不高。为满足全空域定位需求,提出了一种可对声源进行全空域无源定位的立体六元阵列,给出了定位算法和误差公式,并结合图象分析了时延估计误差对主要参量估计精度的影响以及估计参量误差随方位和俯仰的变化关系。该阵型减少了影响定位精度因素,并且将冗余信息进行融合提高定位精度。A novel solid array with six elements for tridimensional aerial acoustic passive location is presented. The principle to locate an aerial sound point and its accuracy related with the array＇s structural parameters, the sound point＇s direction of arrive （DOA）, and the time of arrive （TOA） are discussed with figures. A weighted least-square method is also proposed to improve the range estimation accuracy. This array decreases the number of factors effecting accuracy, and the redundance information is fused to increase the accuracy,

关 键 词：声学无源定位 传声器阵列 波达时间 最小二乘法 

分 类 号：TN912.16[电子电信—通信与信息系统]