| 1. | Space-based systems | Satellites |
| 2. | Ground-based systems | Satellite command and control (C2), launch C2, ground station payload data processing stations, space surveillance stations, command and control systems |
| 3. | Satellite launch vehicle systems | Boosters, upper-stages, payload processing facilities, space launch facilities, ground support equipment |
| 4. | User equipment | Hand-held user terminals, data reception terminals, user terminals |