THE HIGH PRECISION REAL-TIME EPHEMERIS METHOD AT TD-SCDMA ENVIRONMENT

摘要

A method for high precision RTK(Real Time Kinematic) under TD-SCDMA environment is provided to use dynamic RTK according to service quality of a terminal, thereby performing RTK even when a user moves at high speed. A mobile terminal receives a GPS(Global Positioning System) satellite signal from a GPS satellite(S2). The mobile terminal transmits a Kinematic request signal and a GPS sub Kinematic signal of the mobile terminal corresponding to the GPS satellite signal to a location server(S4). The location server transmits phase information to the mobile terminal(S10b). The mobile terminal searches the GPS satellite to acquire carrier satellite information. The mobile terminal calculates location information of the terminal by using semi RTK technique or RTK technique according to service quality(S14,S18).