Title: The Beginner's Guide to Different Satellite Navigation Systems
Headings: The Beginner’s Guide to Global Navigation Satellite Systems
The Beginner’s Guide to Global Navigation Satellite Systems
What is a satellite navigation system and how does it work?
More details on frequency and antenna applications can be found here.
Why are there different satellite navigation systems?
Did you know that “GPS” is NOT an umbrella term for satellite navigation systems?
Global Navigation Satellite Systems
Global Positioning System (GPS)
Global Satellite Navigation System (GLONASS)
Galileo
BeiDou Navigation Satellite System (BDS)
Quasi-Zenith Satellite System (QZSS)
Indian Regional Navigational Satellite System (IRNSS)
In Conclusion

Content: Global Navigation Satellite Systems
Global navigation satellite systems (GNSS) provide coverage all over the world. Global Positioning System (GPS)
The NAVSTAR GPS system is composed of 24 satellites, and was created by the U.S. Department of Defense. It can be accessed anywhere on or near the Earth where there is an unobstructed line-of-sight to four or more GPS satellites. The system provides critical capabilities to military, civil, and commercial users worldwide and is freely accessible to anyone with a GPS receiver. Global Satellite Navigation System (GLONASS)
GLONASS is also composed of 24 satellites but was developed in the Soviet Union and is operated by the Russian Aerospace Defense Forces. This sat nav system is the only other navigational system in operation with global coverage and of comparable precision. Galileo
Galileo is a global navigation system developed by the European Union and European Space Agency intended primarily for civilian use. Named after the Italian astronomer Galileo Galilei, one of the goals was to provide a high-precision positioning system for European nations that would be independent from the Russian GLONASS, U.S. GPS, Indian IRNSS and Chinese Compass systems. The 30-satellite system first launched in 2011 with expected completion at the end of 2020. The use of the basic services is free and open to everyone, while the high-precision capabilities will be available for paying commercial users and for military use.