双五元十字阵被动声定位融合算法及性能分析  

Passive acoustic localization fusion algorithm and performance analysis of double five element cross array

作　　者：路敬祎[1,2] 叶东[1] 陈刚[1] 郭玉波[1] 马雯萍 

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,哈尔滨150001 [2]东北石油大学电气信息工程学院,大庆163318

出　　处：《仪器仪表学报》2016年第4期827-833,共7页Chinese Journal of Scientific Instrument

基　　金：国家自然科学基金(51075095);黑龙江省自然科学基金(E201045)项目资助

摘　　要：为了提高被动声测量的准确度和克服声源目标空间方位模糊的问题,提出了双五元十字阵被动声定位融合算法。首先设计了一种双五元十字阵传声器阵列模型,依据模型定义了声源点象限判断准则;然后根据被动声定位原理推导了单一五元十字阵的声源点坐标计算公式,根据俯仰角度正弦值作为加权系数,构造了双五元十字阵被动声定位融合算法模型;最后对该模型测距和测向的精度进行了理论分析,给出了时延估计误差、俯仰角以及方位角与双五元十字阵定位性能的关系。理论分析和仿真实验结果表明,该算法克服了声源目标空间方位模糊的问题、减小了时延估计误差对测距测向性能的影响。本文算法能够更加准确地测量出声源点的位置信息。In order to improve the accuracy of passive acoustic measurement and overcome the spatial orientation ambiguity of target sound source. This paper presents a passive acoustic localization fusion algorithm of double five element cross array. Firstly, the microphone array model of double five element cross array is designed; according to the model, the quadrant decision criterion for acoustic source point is defined. Then, according to the passive acoustic localization principle, the acoustic source point coordinate calculation formula for single five element cross array is deduced. Taking the sine value of the pitch angle as the weighting coefficient, the passive acoustic localization fusion algorithm model for double five element cross array is constructed. Finally, the direction finding and range measure- ment accuracy of the model is analyzed in theory; and the relationship between time delay estimation error, pitch angle and azimuth angle and the double five element cross array localization performance is given. Theoretical analysis and simulation experiment results indicate that the proposed algorithm can overcome the spatial orientation ambiguity problem of target sound source and decrease the influence of time delay estimation error on the direction finding and range measurement performance. This method can measure the position informa- tion of the acoustic source point more accurately.

关 键 词：被动声定位 传声器阵列 双五元十字阵 误差分析 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术] TH86[自动化与计算机技术—计算机科学与技术]