Abstract:The real-time observation data transmitted by BNC(BKG NTRIP client) is used to evaluate and analyze the positioning performance of GPS and QZSS in the Asia Pacific region from the number of visible satellites, position dilution of precision(PDOP), multipath effect, signal-to-noise ratio, real-time relative positioning accuracy, etc. The results show that after combining QZSS with GPS system, the number of visible satellites increases, the geometric configuration of satellites is better, and the availability and reliability of positioning accuracy improves. The variation pattern of the multipath effect of QZSS satellites is consistent with that of GPS satellites, and the multipath error of each frequency point of QZSS satellites is mostly smaller than that of GPS satellites. The signal-to-noise ratio and altitude angle variation trend of each frequency point of GPS and QZSS satellites are basically the same. In the N, E, and U directions, the real-time relative positioning accuracy of the GPS/QZSS combination is improved compared to GPS.
ZONG Yao,HE Kaifei,LI Ming et al. Analysis of Real-Time Relative Positioning Performance of GPS/QZSS in Asia Pacific Region[J]. jgg, 2024, 44(4): 372-376.