Research On The Position Estimate Based On WSN And ZigBee

In order to meet the need of the position estimate, the paper proposes the WSN position estimate based on ZigBee, after introducing the present position estimate technology and the location protocol at home and aboard.The paper improves the measurement error method after the research and analysis of the WSN location algorithm and the RSSI distance-measuring error, to reduce the location error. In particular, it makes the estimate of distance-measuring and updates in real time the empirical value of transmission loss formula in the median method, and it simulates and analyses the location error by MATLAB software and SIMULINK Toolbox, getting the comparative analysis date of the error before and after the improving, reducing the location error.The paper applies the indoor location system(as the parking guidance) into the vehicle detection system in parking area indoor, after introducing the indoor paring guidance system, helping to make the vehicle get vacant position.