声源定位算法的精度分析

Precision analysis based on acoustic positioning algorithm

针对国家靶场测量落点坐标测试手段存在局限性的问题,该文提出基于时延估计的声源定位算法,给出影响该算法定位精度的几个因素和传感器阵列的几种布站方式,并对各种布站方式的定位误差进行了仿真计算,通过仿真分析了在不同的布站方式下声波的传播速度误差和时间差测量误差对定位精度的影响。结果表明:采用声波定位技术测量落点坐标精度可满足指标要求;合理布设传感器阵列能够提高定位精度。

Aiming at the limitations existed in the process of testing dropping point coordinates for the national shooting range,this paper proposed a sound source locating algorithm based on Time Difference Of Arrival（TDOA）,and gave the factors that affect the accuracy of this algorithm and the arrangement modes of the sensor array,then simulated the positioning errors of various layout methods of sensor array,and analyzed the impact of sound velocity error and time difference measuring error on the positioning accuracy.Results showed that the accuracy of the coordinates measured by acoustic positioning technology could meet the requirement of indicators,and arraying the sensors reasonably would improve the positioning accuracy.