1results about How to "Achieving Clock Synchronization" patented technology

This invention discloses a TDOA positioning method, server, and system based on clock and frequency offset compensation. The method includes: acquiring local TOEs recorded when a base station periodically transmits a broadcast signal, and local TOAs recorded by other base stations when they receive corresponding broadcast signals; dynamically and continuously estimating the frequency and clock offsets between base stations based on the acquired TOEs and TOAs; acquiring the local TOAs recorded by each base station when receiving signals transmitted by the tag to be located; combining the TOAs of each base station to form an initial TDOA; compensating the initial TDOA based on the estimated frequency and clock offsets between base stations to obtain a correct TDOA; and using a nonlinear least squares method to achieve TDOA positioning based on the correct TDOA. This invention can improve the positioning accuracy of TDOA and has broad application value in the field of passive target positioning.