| Abstrakt: |
The Global Positioning System (GPS) is a GNSS constellation, hut GNSS is not always GPS. GPS is one of the GNSS constellations used around the world. The GNSS constellations include; GPS (US), QZSS (Japan), Bcidon/BDS (China), Galileo (EU), and GLONASS (Russia). In 1999, the European Commission (EC) proposed the; European Galileo satellite navigation system for the; first time;. A four-phase; development was propose«!, including publie; and private; sector finance. Galileo was intended for both civilian and government use;, and is managed and controlled by civil authorities. Galileo is made up of 30 satellites, a numbe;r erf globally distributee! ground stations, mid a ground control anel monitoring system, all erf which are; extremely similar to the; structure, format, anel layout erf GPS. In this study, we; investigate; GPS/GLO NASS/Galileo/Bcidou/IRNSS/QZSS Navigation Satellite System integration algorithm for long base;line;s ranging from 1500 km te) 3000 km in China, Japan anel Mongolia. The; positioning performance with GPS/GLONASS/Galile;e)/BDS/IRNSS/QZSS, GPS-only, Galileo-only, GLONASS-only anel BDS-only, etc. is compared in terms erf the; positioning accuracy. An improvement erf' petitioning accuracy over long baselines can be; found with GPS/GLONASS/Galilco/BDS/QZSS/IRNSS compared with that erf' GPS-only anel that erf BDS-only. The; obtained differences erf' the; two baselines (Topcon Magnet Tools Software; (Multi-GNSS) -(CSRS-PPP (GPS/GLONASS), (Trimblc-RTX (GPS/GLONASS), (AUSPOS (GPS/GLONASS)) Online; Processing Software) by using GPS/GLONASS/Galilce)/BDS/QZSS/IRNSS signals is between 40 cm anel 111.5 cm on three; days. [ABSTRACT FROM AUTHOR] |
