Application research about wireless sensor network nodes location algorithm based on improved RSSI
基于改进的RSSI无线传感器网络节点定位算法研究

This paper researched wireless sensor network node location. Wireless network anchor nodes deployed uneven, and density was small, the traditional localization algorithms had not considered RSSI news anchor node localization, location accuracy was low. In order to improve the location accuracy, this paper proposed a location algorithm based on the RSSI. Firstly, it calculated RSSI value through wireless signal strength between the nodes. And then converted RSSI value into centroid algorithm weights. Lastly, it used centroid localization algorithm to calcauate the node location and obtained node exact location. The simulation results show that, the algorithm improves the node location accuracy and reduces the location error compared with traditional centroid localization algorithm. The centroid localization algorithm based on RSSI is a high precision node localization algorithm.