Research Of Wireless Location System Based On Zigbee

Wireless location technology is currently hot topic in Zigbee wireless sensor network research,With the increasement of demand and application in the location,how to improve location accuracy of wireless location system based on Zigbee technology is a problem that need to be solved in Zigbee wireless sensor network.In this paper, we focus on the study of network protocol and location technology in the core technology that Zigbee wireless sensor network supports,and build a Zigbee wireless location system.According to the structure of the Zigbee protocol stack and the required function of every layer,write protocol function modules,achieve Zigbee protocol simulation through NS2,complete the construction of network and communicate between nodes.And use the Kalman filter algorithm to reconstruct the TDOA location algorithm.Compared with the traditional location algorithm,reduce positioning error and impove the location accuracy.