Test node-based WCL algorithm for wireless sensor networks

From a system perspective, cost effectiveness and high-precision location information are important in wireless sensor networks (WSNs). Since a weighted centroid localization (WCL) algorithm can reduce hardware installation cost and guarantee localization accuracy, this algorithm is considered as one of the promising localization algorithms for WSNs. In this paper, we propose a test node-based WCL algorithm for improving the localization accuracy and making the localization system cost effective. The simulation results show that the proposed test node-based WCL algorithm provides higher precision location information than the conventional WCL algorithm with a reduced number of real anchor nodes.