Evaluation of Availability Improvement by Adding QZSS on Multi Locations in Various Conditions

Abstract

The First Quasi-Zenith Satellite "MICHIBIKI" was successfully launched on September 11, 2010. After the initial functional verification, we have started the domestic experiments to evaluate performance of the Quasi-Zenith Satellite System(QZSS), especially the effect of QZSS on the improvement of availability for GPS Positioning, Navigation and Timing (PNT) service. “MICHIBIKI Field Observation on Multi-Locations in Various Conditions” is one of technical demonstration activities, started after the initial verification of “MICHIBIKI”. The purpose of the experiments is to show the “MICHIBIKI” capability to enhance GPS availability. The experiment has been conducted in several different conditions with statistical manner. There are two approaches for the experiment. One is “Multi-locations” aiming to collect as much as data to evaluate statistically and the other is “Various conditions” aiming to evaluate the effect of surrounding environments as well as different use cases. By using multi-frequencies high-end GNSS receiver and handheld GPS logger, Fixed Point Observation and Moving Point Observation have been conducted all over Japan in collaboration with lots of partners. Analysis results of post-processing show the improvement positioning availability by “MICHIBIKI”. In this paper, we will report the overview of the experiment and current analysis result of observed data.