Multiple Wideband Acoustic Source Tracking in 3-D Space Using a Distributed Acoustic Vector Sensor Array

作     者：Zhong, Xionghu Premkumar, A. B. Wang, Haiyan 

作者机构：Nanyang Technol Univ Sch Comp Engn Singapore 639798 Singapore Univ Malaya Fac Engn Dept Elect Engn Kuala Lumpur 50603 Malaysia Northwestern Polytech Univ Sch Marine Sci & Technol Xian 710072 Peoples R China 

出 版 物：《IEEE SENSORS JOURNAL》 (IEEE Sensors J.)

年 卷 期：2014年第14卷第8期

页      面：2502-2513页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 0804[工学-仪器科学与技术] 0702[理学-物理学] 

主　　题：Acoustic vector sensor distributed sensor array particle filtering Rao-Blackwellization posterior Cramer-Rao bound 

摘      要：This paper considers the problem of tracking multiple acoustic sources in 3-D space using a distributed acoustic vector sensor array. Unlike the existing two-stage localization approach, which estimates the direction of arrival of the source at each sensor first and then triangulate a 3-D position, a particle filtering approach is developed to directly fuse the signals collected from distributed sensors. To enhance the tracking performance and constrain the computational complexity, an information filter is developed to approximate the optimal importance sampling. Since the position state of the source is linear with the velocity state, a Rao-Blackwellization step is employed to marginalize out the velocity component. In addition, the posterior Cramer-Rao bound is developed to provide a lower performance bound for the distributed tracking system. Both the numerical study and simulations show that the proposed tracking approach significantly outperforms the two-stage localization approaches for 3-D position estimation.