Appendix 1
Satellite Navigational Systems
There are many major primary satellite navigation systems as on date. Some of them are global while others are regional. A couple of them are fully operational while the rest are either partially operative or about to come up very soon. These systems are namely:
1. Global Positioning System (GPS) of USA;
2. Global Navigation Satellite System (GLONASS) of Russia;
3. GALILEO of the European Union;
4. QZSS of Japan (GPS complementary);
Out of these, the QZSS and IRNSS are regional systems while other are global. The important features of these systems are mentioned below.
A1.1. Global Positioning System
The GPS was developed by the United States a part of the satellite-based ...