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: In the early days of the U.S. run NAVSTAR GPS system, an error code was transmitted with the satellite signal. This error decreased the accuracy of the system so that it was not as effective for those outside the United States military. Commercial organizations began to use terrestrial beacons on the Earth to augment the system and account for the error. These beacons were built along the coast and waterways by the United States Coast Guard and similar organizations in other countries to help ships navigate local coastlines and waterways. This required a separate receiver, which increased the cost and really prevented the systems from becoming commercially viable. Other agencies in the United States and around the world created their own augmentation systems to improve accuracy. This includes the Federal Aviation Administration for commercial aircraft navigation and the Coast Guard for maritime navigation. Similar systems were created in Europe, Russia, Japan, India and others. The error code was deactivated in 2000 and GPS has since become very widely used. However, the fact that the United States could turn the error code back on at any time or even turn off the signals entirely has prompted other countries to begin to develop satellite navigation systems of their own.