One Anchor Distance and Angle Based Multi-Hop Adaptive Iterative Localization Algorithm for Wireless Sensor Networks

Authors:
S. B. Kotwal;Shekhar Verma;G. S. Tomar;R. K. Abrol;Suryansh Nigam
Affiliations:
SMVD University, India;Indian Institute of Information Technology, India;Malwa Institute of Technology, India;SMVD University, India;SMVD University, India
Venue:
International Journal of Grid and High Performance Computing
Year:
2010

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Abstract

This paper presents distance and angle measurements based Multi-Hop Adaptive and Iterative Localization algorithm for localization of unknown nodes in wireless sensor networks WSNs. The present work determines uncertainty region of unknown nodes with respect to known anchor nodes using noisy distance and angle measurements. This node transmits its uncertainty region to other unknown nodes to help them determine their uncertainty region. Because of noisy distance and angle measurements, the error propagation increases the size of regions of nodes in subsequent hops. Using only one anchor node as reference, the proposed iterative localization algorithm reduces the error propagation of this noisy distance and angle measurements and the uncertainty region of all unknown nodes within a given communication range. The results clearly indicate the improved efficiency of the proposed algorithm in comparison with existing algorithms.