A Design Of Improved RSSI-Based Localization Node Of Wireless Sensor Networks

Node localization technology is one of the key technologies of Wireless Sensor Networks, is the premise of WSN target identification, monitoring, tracking, and many other applications.Firstly, In the access to large amounts of literature on the basis of the characteristics of Wireless Sensor Networks, applications, and domestic and foreign research status; Secondly, based on the WSN node localization technology Research, for several typical positioning algorithm the analysis and comparison, the RSSI location algorithm based on fuzzy thought, the use of a the Sugeno measure model matching node localization algorithm and the trajectory prediction weighted using the least squares method to improve the positioning accuracy of the algorithm; Finally, the use of TI wireless transceiver chip CC2430and CC2431, design reference nodes, aggregation nodes and location nodes, the nodes in the network in real-time positioning function. The system verifies the feasibility of self-localization algorithm based on RSSI node, the system positioning accuracy of up to0.5meters to reach the design requirements.