DocumentCode :
2154449
Title :
A Novel Sequence Based Localization Approach for Wireless Sensor Networks
Author :
Xu, Xiao ; Deng, Zhidong
Author_Institution :
Dept. of Comput. Sci. & Technol., Tsinghua Univ., Beijing, China
fYear :
2009
fDate :
24-26 Sept. 2009
Firstpage :
1
Lastpage :
4
Abstract :
In wireless sensor networks, two types of emerging range-free and high-accuracy localization approaches including the approximate-point-in-triangulation test (APIT) and the sequence based localization (SBL) greatly depend on density of anchor nodes and connectivity of network. In this paper, we present a novel localization approach that combines APIT with SBL, called SB-APIT. First, we use APIT approaches to determine boundary. We then sequentially measure the received signal strength indicator (RSSI) value of target node within the range of one-hop neighbor nodes and rank the RSSI values to yield a location sequence. Furthermore, the coordinates of the area´s geometric center is calculated as the target node´s coordinates. Finally, the simulation results obtained with 200 nodes show that our new approach reduces the average localization error by about 5%. It considerably improves the accuracy of localization.
Keywords :
wireless sensor networks; anchor node density; approximate-point-in-triangulation test; average localization error; high-accuracy localization approaches; one-hop neighbor nodes; sequence based localization approach; signal strength indicator; wireless sensor networks; Computer science; Intelligent networks; Intelligent sensors; Intelligent systems; Intrusion detection; Laboratories; Radio communication; Sensor systems; Testing; Wireless sensor networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3692-7
Electronic_ISBN :
978-1-4244-3693-4
Type :
conf
DOI :
10.1109/WICOM.2009.5304060
Filename :
5304060
Link To Document :
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