TIME-BASED LOCALIZATION FOR ASYNCHRONOUS WIRELESS SENSOR NETWORKS

被引：0

作者：

Wang, Yiyin ^{[1
]}

Leus, Geert ^{[1
]}

Ma, Xiaoli ^{[2
]}

机构：

[1] Delft Univ Technol, Fac EEMCS, Mekelweg 4, NL-2628 CD Delft, Netherlands

[2] Georgia Inst Technol, Sch ECE, Atlanta, GA 30332 USA

来源：

2011 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING | 2011年

关键词：

Localization; synchronization; clock skew; clock offset; least squares; two-way ranging; SYNCHRONIZATION;

D O I：

暂无

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

In this paper, we propose time-based localization approaches for asynchronous wireless sensor networks (WSNs), where not only clock skews but also clock offsets are present at all nodes. We first propose a joint synchronization and localization approach using the two-way ranging (TWR) protocol. Furthermore, a novel ranging protocol, namely asymmetric trip ranging (ATR), is employed and a two-step joint synchronization and localization approach is developed. As a result, we achieve efficient closed-form least-squares (LS) estimators. We compare these two proposed approaches. Moreover, simulation results corroborate the efficiency of our time-based localization schemes.

引用

页码：3284 / 3287

页数：4

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