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Journal of Information Science and Engineering, Vol. 31 No. 4, pp. 1249-1265 (July 2015)


An Efficient Geometric Localization Approach for Distributed Sensor Networks*


YAO-HUNG WU, CHIN-WEI FAN AND WEI-MEI CHEN
Department of Electronic and Computer Engineering
National Taiwan University of Science and Technology
Taipei, 106 Taiwan
E-mail: {D9602404; M9802118; wmchen}@mail.ntust.edu.tw

Localization is a fundamental problem in wireless sensor networks. Many approaches, including range-based and range-free techniques, have been proposed to determine the optimal location for sensor nodes. This paper presents a simple range-free localization scheme that is based on received signal strength indicator (RSSI) geometric localization for wireless sensor networks. The node locations are computed by performing simple geometric calculations that rely on the specific approximate RSSI values with the position of a mobile beacon equipped with a global positioning system. The simulation results showed that the proposed scheme is efficient, and that the node positions can be determined accurately.

Keywords: wireless sensor networks, localization, mobile beacon

Full Text () Retrieve PDF document (201507_06.pdf)

Received March 14, 2014; revised June 20, 2014; accepted September 28, 2014.
Communicated by Jiann-Liang Chen.