Accurate time delay estimation based passive localization

作     者：Lui, Kenneth W. K. Chan, Frankie K. W. So, H. C. 

作者机构：City Univ Hong Kong Dept Elect Engn Kowloon Hong Kong Peoples R China 

出 版 物：《SIGNAL PROCESSING》 (信号处理)

年 卷 期：2009年第89卷第9期

页      面：1835-1838页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 

基　　金：CityU 

主　　题：Time delay estimation Source localization Semi-definite programming 

摘      要：A conventional approach for source localization is to utilize time delay measurements of the emitted signal received at an array of sensors. The time delay information is then employed to construct a set of hyperbolic equations from which the target position can be determined. In this paper, we utilize semi-definite programming (SDP) technique to derive a passive source localization algorithm which can integrate the available a priori knowledge such as admissible target range and other cues. It is shown that the SDP method is superior to the well-known two-step weighted least squares method at lower signal-to-noise ratio conditions. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved.