A Distributed Localization Scheme for Wireless Sensor Networks

摘要

Localization of the nodes in Wireless sensor networks (WSNs) is an important research issue, since it can enhance the efficiency in computation and minimize the power consumption of the nodes. In this paper, a novel localization algorithm is proposed to estimate the location information of the normal nodes with help of few beacon nodes and angle information of the anchor modes. Our localization scheme can use at most three beacon nodes to find location information of any normal node in a distributed manner. Besides, we give the theoretical basis for determining the localization error using probability distribution function. Our performance analysis shows that there is a tradeoff between deployed number of beacon nodes and localization error and average localization time of the network can be increased with deployed number of normal nodes.