2023 Volume 79 Issue 22 Article ID: 22-22046
The Centimeter level Augmentation Service (CLAS), a service provided by the Quasi-Zenith Satellite System (QZSS), calculates high-precision corrections using data from GPS-based Control Station maintained nationwide by the Geospatial Information Authority of Japan (GSI), Ministry of Land, Infrastructure, Transport and Tourism, to accurately determine current position. This service transmits centimeter level augmentation information from QZSS satellites to accurately determine the current position. The results were evaluated based on the Fix Rate, RMS error, and other parameters. The results showed that the use of Galileo for both real-time and post-processing analysis tended to reduce the horizontal error.
