A low power consumption indoor locating method research based on UWB technology

This paper ensures the entire Anchor keeping time synchronization by Kalman filtering algorithm[3]. The Tag will send broadcast messages to the Anchor when it enters the hall. At the same time the awakened Anchor sends data packets to all the Tag in the hall, and then each Tag records the arrival time and ID of each Anchor. Based on a TDOA localization algorithm [4] we can count the time dierence, and then multiplies by the speed of light we can obtain the absolute value of the distance dierence according to hyperbolic algorithm. Finally, we can calculate the coordinates of the Tag based on triangulation algorithm that is the Tag location information.