Localization Algorithm Based on Maximum a Posteriori in Wireless Sensor Networks
Joint Authors
Lu, Kezhong
Xiang, Xiaohua
Mao, Rui
Zhang, Dian
Feng, Yuhong
Source
International Journal of Distributed Sensor Networks
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-12-15
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Electronic engineering
Information Technology and Computer Science
Topics
Abstract EN
Many applications and protocols in wireless sensor networks need to know the locations of sensor nodes.
A low-cost method to localize sensor nodes is to use received signal strength indication (RSSI) ranging technique together with the least-squares trilateration.
However, the average localization error of this method is large due to the large ranging error of RSSI ranging technique.
To reduce the average localization error, we propose a localization algorithm based on maximum a posteriori.
This algorithm uses the Baye's formula to deduce the probability density of each sensor node's distribution in the target region from RSSI values.
Then, each sensor node takes the point with the maximum probability density as its estimated location.
Through simulation studies, we show that this algorithm outperforms the least-squares trilateration with respect to the average localization error.
American Psychological Association (APA)
Lu, Kezhong& Xiang, Xiaohua& Zhang, Dian& Mao, Rui& Feng, Yuhong. 2011. Localization Algorithm Based on Maximum a Posteriori in Wireless Sensor Networks. International Journal of Distributed Sensor Networks،Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-458254
Modern Language Association (MLA)
Lu, Kezhong…[et al.]. Localization Algorithm Based on Maximum a Posteriori in Wireless Sensor Networks. International Journal of Distributed Sensor Networks No. 2012 (2012), pp.1-7.
https://search.emarefa.net/detail/BIM-458254
American Medical Association (AMA)
Lu, Kezhong& Xiang, Xiaohua& Zhang, Dian& Mao, Rui& Feng, Yuhong. Localization Algorithm Based on Maximum a Posteriori in Wireless Sensor Networks. International Journal of Distributed Sensor Networks. 2011. Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-458254
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-458254