The delay in signal reception is used by GNSS receivers to determine their distance from the satellite. It is known where the satellite was at the moment of transmission (calculated from the data provided in the slower navigation message).
In order to host ground stations for their respective global navigation satellite systems (GNSSs), BeiDou and GLONASS, which are rivals to the American-run Global Positioning System, China and Russia signed agreements late last month (GPS).
Galileo began providing Early Operational Capability (EOC) services on December 15, 2016, with the goal of achieving Full Operational Capability (FOC) in 2022.
...
Satellite navigation system Galileo A constellation's size Website (European GNSS Service Center) gsc-europa.eu
The experts claim that weather has no discernible impact on GNSS. After all, GNSS was designed to be an all-weather, round-the-clock navigational aid.
Galileo (EU), BeiDou (China), GPS (US), and GLONASS (Russia) are the four GNSS systems used worldwide (China). There are also two regional systems: IRNSS, often known as NavIC, and QZSS (Japan) (India).
Since BeiDou is a two-way system, it can pinpoint the locations of receivers. Even text communications with up to 1,200 Chinese characters can be transmitted back to the satellites using BeiDou-compatible hardware.
UAVs that are utilized in conflict zones or close to the borders of "enemy" states are GPS-reliant military systems that are susceptible to jamming and spoofing.
In rare circumstances, you can technically receive a GPS signal indoors. However, indoor transmissions are typically too weak to be useful.
For a variety of land, sea, air, and space users, it offers all-weather, low-cost, and high-precision navigation information (three-dimensional position, speed, and exact time).
GNSS technology, on the other hand, uses signals from all navigation satellites, not just GPS, and operates on a far larger scale. The precision and dependability of the data received are significantly improved with additional signals available. To put it simply, all GNSS receivers are compatible with GPS, but not all GPS receivers are compatible with GNSS.
7