An Efficient Semidefinite Relaxation Method for Energy-Based Source Localization in Sensor Networks

被引：0
|
作者：
Ai, Wenbao [1 ]
Deng, Huijun [1 ]
Yuan, Jianhua [1 ]
机构：
[1] Beijing Univ Posts & Telecommun, Sch Sci, Beijing 100088, Peoples R China
来源：
MECHATRONICS AND INDUSTRIAL INFORMATICS, PTS 1-4 | 2013年 / 321-324卷
关键词：
source localization; sensor networks; semidefinite programming relaxation; acoustic energy;
D O I：
10.4028/www.scientific.net/AMM.321-324.568
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper addresses the energy-based localization problem in wireless sensor networks. Since the objective function of the weighted least squares (WLS) formulation is nonconvex, its global solution is hard to obtain without a good initial estimate. In this paper, An approximate solution to the (WLS) problem is presented, by relaxing the minimization problem into semidefinite programming form. One can obtain an optimal solution of the (SDP) by rank-one decomposition of matrices. Numerical results show that the proposed method is indeed efficient.
引用
收藏
页码：568 / 572
页数：5
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