回复17楼::
你猜被糊弄。自己看:
The Galileo system has a greater accuracy than the GPS, Galileo has an accuracy of less than one meter (GPS three metres).
...
Galileo (satellite navigation)
Coverage Global
Accuracy 1 metre (public) 1 cm (encrypted)
Constellation size
Total satellites 30
Satellites in orbit 22 usable, 2 testing only, 2 unavailable, and 2 retired (2/2020)
Glonass completed in 2015.
Quasi ... The basic four-satellite system was announced as operational on November 1, 2018
你看英文媒体吗?其实只要有GPS,其他系统在民用上都没什么用。所以除了俄国和中国,其他的西方国家搞这个都是个备份和研究用。