Improvement GPS time link in Asia with all in view

GPS satellite orbits and clock offsets, which are provided by the International GPS service (IGS), caused a major transition with GPS time transfer methods. Since a satellite clock error, which is only canceled out by the common-view method, is greatly improved by IGS products, the all-in-view method archives better precision than the common-view method when the baseline of stations is very long. The time transfer quality in the Asia-Pacific region can be improved using the all-in-view because the timing centers in this region are widely separated. This paper shows the level of improvement of the time transfer quality between stations in Asia-Pacific region using the GPS all-in-view.