Location discovery for sensor networks with short range beacons. (9th April 2009)

• Record Type: Journal Article
• Authors: Liu, Fang; Cheng, Xiuzhen; Hua, Dong; Chen, Dechang
• Is Part Of: International journal of ad hoc and ubiquitous computing. Volume 4:Number 3/4(2009)
• Page Start: 125
• Page End: 136
• Publication Date: 2009-04-09
• Subjects: sensor networks -- location discovery -- TDoA -- time difference of arrival -- trilateration -- short range beacons -- time-based positioning -- localisation accuracy -- clustering -- positioning accuracy -- simulation; Ubiquitous computing -- Periodicals; Embedded computer systems -- Periodicals; Electronic data processing -- Distributed processing -- Periodicals; Wireless communication systems -- Periodicals; Computer architecture -- Periodicals; 004.2
• Languages: English
• ISSNs: 1743-8225

Abstract

In this paper, we present TPSS, a time-based positioning scheme for sensor networks with short-range beacons. By measuring Time Difference of Arrival (TDoA) of signals from nearby beacons, nodes can use TPSS to effectively estimate their locations through trilateration iteratively. We also propose iTPSS as an enhancement to improve the localisation accuracy by a clustering-based position refinement. Extensive simulations have been conducted and the results indicate that both schemes are effective and efficient for location discovery, and iTPSS outperforms TPSS in positioning accuracy.