GPS単独測位高精度化の実現性について

概要

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High-accuracy single-point positioning has been an attractive research topic in the GPS community for a number of years. The evolution of the International GPS Service (IGS) products is further increasing the accuracy of precise point positioning techniques. The overall quality of precise point positioning results is also dependent on the quality of the user's GPS measurements. Dual-frequency, geodetic quality GPS receivers are routinely used both in static and kinematic applications for high-accuracy point positioning. However, use of low-cost single-frequency GPS receivers in similar applications creates a challenge because of how the ionosphere, multipath and other measurement error sources are handled. In this paper, we will examine the potential use of such receivers to provide horizontal positioning accuracies of several decimeters (standard deviation). And we will also discuss about the practicability of real-time high-accuracy point positioning service.
2006-03-25