Summary of GNSS parameters
GPS, Galileo, GLONASS, BeiDou
Parameters for each of the GNSS
| Parameter | GPS | GLONASS | Galileo | Beidou |
|---|---|---|---|---|
| First launch | 22-Feb-78 | 12-Oct-82 | 28-Dec-05 | 13-Apr-07 |
| FOC | 17-Jul-95 | 18-Jan-96 | 2012 | 2013 |
| Services | military | military | commercial | authorized |
| civil | civil | open | open/commercial | |
| Number of SV | 31 | 24 | 27 | 27 |
| Orbital planes | 6 | 3 | 3 | 3 |
| Inclination | 55° | 64.8° | 56° | 55° |
| Semi-major Axis [Km] | 26560 | 25508 | 29601 | 27840 |
| Period | 11h58m | 11h15m | 14h05m | 12h50m |
| Coordinate frame | WGS-84 | PZ-90 | GTRF | CGCS2000 |
| Time system | GPST | UTC (SU) | GST | China UTC |
| Coding | CDMA | FDMA | CDMA | CDMA |
| Frequencies [MHz] | L1:1575.42 | G1:1602 | E1:1575.42 | B1-2:1589.74 |
| L2:1227.60 | G2:1246 | E5a:1176.45 | B-1:1561.1 (E2’) | |
| L5:1176.45 | G3:TBD | E5b:1207.14 | B2:1207.14 (E5b) | |
| E6:1278.75 | B3:1268.52 (E6) |
Garrett Seepersad
Enabling access to affordable high precision positioning and navigation.
GNSS measurement processing specialist (aka PPP and RTK positioning).