Research on Centroid Localization Algorithm That Uses Modified Weight in WSN

In wireless sensor networks´ (WSNs´) applications, the ability of sensor node to estimate their accurate position is crucial. In this paper, we develop a modified weighted centroid location algorithm (WCA), which can degrade the effects of the density of beacon nodes and uniformity of deployment. By using weighted average of the received beacon nodes´ coordinates instead of arithmetic mean as the estimation results, receivers can obtain optimum localization results. The performance analysis of both WCA and centroid algorithm (CA) are presented. Simulation results show that WCA can operate efficiently by using weighted centroid mechanisms.