QZSS Regional Navigation System Visibility and Solution Experience from India

In a multi-GNSS environment, users are exploiting the benefits of hybrid multi-constellation GNSS operation for redundancy and enhanced solution quality. The Indian geolocation helps in signal availability from all global and regional systems, but no study on the usability and advantages of the Japanese Quasi-Zenith Satellite System (QZSS) is made from India. This work presents the first results on the availability and advantages of QZSS from India based on simulations and real-time data. It is observed that 2–4 QZSS satellites can always be used from India. In static Single Point Positioning (SPS), QZSS in hybrid operation provides better solution quality over any single global constellation operation and GPS + Galileo + QZSS provides around 1 m 2-dimensional solution precision. The results would be useful for Indian GNSS user community.