Multi GNSS Precise Point Positioning Using Adaptive Kalman Filter

Abstract

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 BeiDou 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.