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An Efficient and Self-Adapting Localization in Static Wireless Sensor Networks
College of Computer Science, Zhejiang University, Hangzhou, 310027, China
Hangzhou Normal University, Hangzhou, 310036, China
* Author to whom correspondence should be addressed.
Received: 28 May 2009; in revised form: 24 June 2009 / Accepted: 29 July 2009 / Published: 4 August 2009
Abstract: Localization is one of the most important subjects in Wireless Sensor Networks (WSNs). To reduce the number of beacons and adopt probabilistic methods, some particle filter-based mobile beacon-assisted localization approaches have been proposed, such as Mobile Beacon-assisted Localization (MBL), Adapting MBL (A-MBL), and the method proposed by Hang et al. Some new significant problems arise in these approaches, however. The first question is which probability distribution should be selected as the dynamic model in the prediction stage. The second is whether the unknown node adopts neighbors’ observation in the update stage. The third is how to find a self-adapting mechanism to achieve more flexibility in the adapting stage. In this paper, we give the theoretical analysis and experimental evaluations to suggest which probability distribution in the dynamic model should be adopted to improve the efficiency in the prediction stage. We also give the condition for whether the unknown node should use the observations from its neighbors to improve the accuracy. Finally, we propose a Self-Adapting Mobile Beacon-assisted Localization (SA-MBL) approach to achieve more flexibility and achieve almost the same performance with A-MBL.
Keywords: wireless sensor networks (WSNs); localization; particle filter; self-adapting mobile beacon-assisted localization (SA-MBL)
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Cite This Article
MDPI and ACS Style
Teng, G.; Zheng, K.; Dong, W. An Efficient and Self-Adapting Localization in Static Wireless Sensor Networks. Sensors 2009, 9, 6150-6170.
Teng G, Zheng K, Dong W. An Efficient and Self-Adapting Localization in Static Wireless Sensor Networks. Sensors. 2009; 9(8):6150-6170.
Teng, Guodong; Zheng, Kougen; Dong, Wei. 2009. "An Efficient and Self-Adapting Localization in Static Wireless Sensor Networks." Sensors 9, no. 8: 6150-6170.