High precision indoor positioning method based on UWB
In order to meet the increasing requirement of indoor positioning, a high precision positioning method based on UWB is designed and imple- mented. Firstly, the ranging method and its Improvement are discussed. Se- condly, combining median filter and Kalman filter algorithm, the collected data are processed smooth method to get stable ranging data. Finally, the indoor real-time positioning system is realized by using weighted least square position- ing algorithm. The test results show that when the refresh frequency is 10HZ, the ranging accuracy of the base station and the tag can reach 5cm.