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Localization with a mobile beacon based on geometric constraints in wireless sensor networks

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4 Author(s)
Sangho Lee ; Dept. of Inf. & Commun., Gwangju Inst. of Sci. & Technol. (GIST), Gwangju, South Korea ; Eunchan Kim ; Chungsan Kim ; Kiseon Kim

Localization schemes using a mobile beacon have similar effects as the use of many static beacons in terms of improving localization accuracy. Specifically, the localization scheme with mobile beacons proposed by Ssu et al. has finegrained accuracy, scalability, and power efficiency without requiring measured distance or angle information. However, this scheme often has large location errors in ill-conditioned cases. To improve the localization accuracy in Ssu's scheme, this letter proposes a localization scheme that estimates sensor location from possible areas by using geometric constraints. During simulations, the proposed scheme was shown to provide higher localization accuracy than Ssu's scheme and other schemes using a mobile beacon.

Published in:

Wireless Communications, IEEE Transactions on  (Volume:8 ,  Issue: 12 )

Date of Publication:

December 2009

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