一种基于区域收缩的分布式声源定位方法

A distributed acoustic localization method based on regional contraction

为了提高分布式声源定位方法的定位精度,降低计算复杂度,提出一种基于区域收缩的分布式声源定位方法。该方法采用多个线性子阵列组成分布式定位阵列组,各线性子阵列根据时延定位法,分别估计声源的位置,并根据声源位置的估计值确定初始矩形搜索区域,结合极大可控响应功率,进行区域收缩获得声源的位置。仿真结果表明,该方法定位精度高,计算复杂度低。

In order to improve localization accuracy and reduce the computational complexity of distributed acoustic source lo- calization method, a distributed acoustic source localization based on region contraction is proposed. Multiple linear sub-ar- rays are used to combine distributed localization arrays, the possible positions of the acoustic sources are preliminary esti- mated by time delay localization method in linear sub-arrays. Then the initial searching region is determined based on the possible positions. Finally combining with the great controlled response power value, the position of the acoustic source is obtained by the region contraction. The simulation results show that the localization accuracy of the proposed method is high, and the computational complexity is low.