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ICASSP
2011
IEEE

Time-based localization for asynchronous wireless sensor networks

8 years 7 months ago
Time-based localization for asynchronous wireless sensor networks
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.
Yiyin Wang, Geert Leus, Xiaoli Ma
Added 20 Aug 2011
Updated 20 Aug 2011
Type Journal
Year 2011
Where ICASSP
Authors Yiyin Wang, Geert Leus, Xiaoli Ma
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