EURASIP Journal on Advances in Signal Processing 
Volume 2008 (2008), Article ID 439523, 16 pages
doi:10.1155/2008/439523
Research Article

Comparison of Semidistributed Multinode TOA-DOA Fusion Localization and GPS-Aided TOA (DOA) Fusion Localization for MANETs

Zhonghai Wang and Seyed Zekavat

 Department of Electrical and Computer Engineering, College of Engineering, Michigan Technological University, Houghton, MI 49931, USA
Received 20 February 2008; Revised 30 July 2008; Accepted 6 October 2008

Recommended by Fredrik Gustafsson

Abstract

This paper evaluates the performance of a semidistributed multinode time-of-arrival (TOA) and direction-of-arrival (DOA) fusion localization technique in terms of localization circular error probability (CEP). The localization technique is applicable in mobile ad hoc networks (MANETs) when global positioning system (GPS) is not available (GPS denied environments). The localization CEP of the technique is derived theoretically and verified via simulations. In addition, we theoretically derive the localization CEP of GPS-aided TOA fusion and GPS-aided DOA fusion techniques, which are also applicable in MANETs. Finally, we compare these three localization techniques theoretically and via simulations. The comparison confirms that in moderate scale MANETs, the multinode TOA-DOA fusion localization technique achieves the best performance; while in large scale MANETs, GPS-aided TOA fusion leads to the best performance.