According to our previous research works, we present the algorithms of the VPPP (Very Precise Point Positions) using multiple GNSS antennas with known distances each other. VPPP algorithms contain the very precise GNSS positioning as well as the so-called GNSS Gyro by estimating the multiple baseline vectors from the reference antenna to other antennas. In this paper, we attempt to implement the satellite orbits and clocks correction data from the MADOCA Products which had been developed by JAXA, into our VPPP algorithms. Further, finally, we show the positioning accuracy as well as the estimation accuracy of the Euler's angles in the GNSS Gyro, in comparison with using the so-called GPS broadcast ephemeris.

In recent years, satellite navigation systems have been actively developed in the world, and they are called GNSS (Global Navigation Satellite System) which includes Global Positioning System (GPS) of the United States, Russian Global Navigation Satellite System (GLONASS), European Galileo (GAL), Chinese Bei-Dou Navigation Satellite System (BDS) and Japanese Quasi-Zenith Satellite System (QZSS). In this paper, we focus on the so-called multi GNSS precise point positioning (PPP), and propose a positioning method to improve its performance.