title: Design of a Direction-of-Arrival Estimation Method Used for an Automatic Bearing Tracking System.
abstract: In this paper, we introduce a sub-band direction-of-arrival (DOA) estimation method suitable for employment within an automatic bearing tracking system. Inspired by the magnitude-squared coherence (MSC), we extend the MSC to the sub-band and propose the sub-band magnitude-squared coherence (SMSC) to measure the coherence between the frequency sub-bands of wideband signals. Then, we design a sub-band DOA estimation method which chooses a sub-band from the wideband signals by SMSC for the bearing tracking system. The simulations demonstrate that the sub-band method has a good tradeoff between the wideband methods and narrowband methods in terms of the estimation accuracy, spatial resolution, and computational cost. The proposed method was also tested in the field environment with the bearing tracking system, which also showed a good performance.
authors.affiliation: Science and Technology on Microsystem Laboratory, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China. guofeng@mail.sim.ac.cn.
authors.forename: Feng
authors.initials: F
authors.lastname: Guo
authors.affiliation: Science and Technology on Microsystem Laboratory, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China. liuhuawei@mail.sim.ac.cn.
authors.forename: Huawei
authors.initials: H
authors.lastname: Liu
authors.affiliation: IBM-Research China Lab, Shanghai 201203, China. jchhuang@mail.ustc.edu.cn.
authors.forename: Jingchang
authors.initials: J
authors.lastname: Huang
authors.affiliation: IBM-Research China Lab, Shanghai 201203, China. zxinscholar@gmail.com.
authors.forename: Xin
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Science and Technology on Microsystem Laboratory, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China. zuxs@mail.sim.ac.cn.
authors.forename: Xingshui
authors.initials: X
authors.lastname: Zu
authors.affiliation: Science and Technology on Microsystem Laboratory, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China. libq@mail.sim.ac.cn.
authors.forename: Baoqing
authors.initials: B
authors.lastname: Li
authors.affiliation: Science and Technology on Microsystem Laboratory, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China. yuanxb@mail.sim.ac.cn.
authors.forename: Xiaobing
authors.initials: X
authors.lastname: Yuan
keywords: DOA estimation; bearing tracking; microphone array; narrowband; sub-band magnitude-squared coherence; wideband