Decentralized TDOA Sensor Pairing in Multihop Wireless Sensor Networks

被引：29

作者：

Meng, Wei ^{[1
]}

Xie, Lihua ^{[1
]}

Xiao, Wendong ^{[2
]}

机构：

[1] Nanyang Technol Univ, Sch Elect & Elect Engn, Ctr E City, EXQUISITUS, Singapore 639798, Singapore

[2] Univ Sci & Technol Beijing, Sch Automat & Elect Engn, Beijing, Peoples R China

来源：

IEEE SIGNAL PROCESSING LETTERS | 2013年 / 20卷 / 02期

基金：

新加坡国家研究基金会; 中国国家自然科学基金;

关键词：

Dominating set; Fisher information matrix (FIM); sensor pairing; source localization; TDOA; wireless sensor network; CONNECTED DOMINATING SETS; SOURCE LOCALIZATION; ALGORITHMS; LOCATION;

D O I：

10.1109/LSP.2013.2237823

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 letter is concerned with source localization based on time-difference-of-arrival (TDOA) measurements from spatially separated sensors in a wireless sensor network (WSN). Most of the existing works adopt a centralized sensor pairing strategy, where one sensor node is chosen as the common reference. However, due to the bandwidth and power constraints of multihop WSNs, it is well known that this kind of centralized methods is energy consuming due to the need of single and multihop transmissions of raw measurement data. In this letter, we propose a decentralized in-network sensor pairing method to acquire TDOA measurements for source localization. It is proved that the proposed decentralized in-network sensor pairing method can result in the same Cramer-Rao-Bound (CRB) as the centralized one at a far less communication cost.

引用

页码：181 / 184

页数：4

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