Node Location In Distributed Wireless Sensor Networks Based on Weighted Least Square Estimation

Abstract

In order to solve the problems of traditional localization methods, such as large localization error and low localization accuracy, a new localization method based on weighted least square estimation is proposed. In this method, firstly, a distributed wireless propagation model is established according to the structural characteristics of the nodes in the distributed wireless sensor network. Then, the weighted least square estimation algorithm is used to determine the weight of the nodes. Through the weight analysis of the nodes to be determined, the accurate location of the nodes in the network is calculated. Compared with the traditional localization methods, the results show that the localization error of the method based on weighted least square estimation is obviously smaller than that of the traditional method, and it has higher localization accuracy, which has good practicability (Abstract).