Table 1 Deployment status of the multi-GNSS constellations as of July 2023
From: Orbit and clock products for quad-system satellites with undifferenced ambiguity fixing approach
System | Blocks | Signals | Satellites |
|---|---|---|---|
GPS | IIR | L1C/A, L1/L2 P(Y) | 7 |
| Â | IIR-M | L1C/A, L1/L2 P(Y), L2C, L1/L2 M | 7 |
| Â | IIF | L1C/A, L1/L2 P(Y), L2C, L1/L2 M, L5 | 12 |
|  | III | L1C, L1C/A, L1/L2 P(Y), L2C, L1/L2 M, L5 | 5 + 1a |
BDS-2 | GEO | B1I, B2I, B3I | 5 |
| Â | IGSO | B1I, B2I, B3I | 7 |
| Â | MEO | B1I, B2I, B3I | 3 |
BDS-3 | GEO | B1I, B3I, B2b | 2 + 1a |
| Â | IGSO | B1I, B3I, B1C, B2a/b | 3 |
| Â | MEO | B1I, B3I, B1C, B2a/b | 24 |
Galileo | IOV | E1, E6, E5a/b/ab | 3 + 1a |
|  | FOC | E1, E6, E5a/b/ab | 19 + 4a |
GLONASS | M | L1/L2 C/A + P | 15 |
|  | M +  | L1/L2 C/A + P, L3 | 6 |
|  | K | L1/L2 C/A + P, L3 | 3 + 1a |