Glonass was first developed back in 1976. Furthermore, there are five different versions of it: GLONASS, GLONASS – M, GLONASS – k, GLONASS – K2, GLONASS – KM.
There are few differences between GPS and Glonass. The main one is the number of satellites that each of them have orbiting the planet. While GPS have 31, Glonass has 24 satellites orbiting and sending signals to the earth.
Let’s check what else is different.
-GPS
- Owned by the United States
- Using CDMA coding
- 31 satellites in total
- Orbital height of 19,130 km
- Accuracy position: 3.5 – 7.8 m
- Orbital plane inclination of 55 degree
- Orbital period of 11 hours and 58 minutes
- Frequency of 1.57542 GHz (L1 signal) 1.2276 GHz (L2 signal)
- Status: operational
-GLONASS
- Operated by the Russian Federation
- Using FDMA coding
- At least 24 satellites
- Orbital height 21,150 km
- Accuracy position: 5 – 10 m
- Orbital plane inclination 64.8 degree
- Orbital period of 11 hours and 16 minutes
- Frequency of Around 1.602 GHz (SP) Around 1.246 GHz (SP)
- Status: operational
