An investigation of the integrated quasi-stable datum adjustment and Kalman filter method for the determination of GNSS time system(WSANE2007)

概要

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The network of atomic clocks is the core part of the Global Navigation Satellite Systems (GNSS). It is well known that all clocks of the ground monitoring stations must be synchronized first. Satellites clocks must also be synchronized using the satellite signal corrections measured from the groung monitoring stations. Early GNSS used the clock from one of the ground stations as a master clock for the time reference of satellite clocks. Since the GNSS was developed a few decades ago, a composite clocks method has been extensively studied. A special Kalman filtering technique has been used for the determination of the GNSS system time since 1990s in the Global Positioning System the (GPS). This paper gives overviews of the current and future developments of the GNSS time system, outlines both the GPS and Galileo time systems, and investigates the composite clocks algorithm. A robust Kalman filtering method and the feasibility of quasi-stable datum adjustment combine Kalman filter for the determination of the system time has been studied.
社団法人電子情報通信学会の論文
2007-04-09