Globalstar Satellites |
CONSTELLATION DESCRIPTION |
| Number of Satellites |
48 satellites with 4 on-orbit
spares |
| Geometry |
four planes of twelve
operational spacecraft |
| Orbit |
LEO - 1400 km (843 miles)
circular at 52 degrees inclination |
| Orbit Period |
113.8 minutes |
| Coverage (estimated) |
between 67 degrees North and
South Latitude |
| Initiation of Operations |
Late 1999 |
| PAYLOAD
CAPABILITIES |
| Types of Services |
Voice, data, fax, paging, and position location |
| Voice Transmission Rate (bps) |
adaptive 2400 / 4800 / 9600 |
| Data Rate (bps) |
9600 |
| On-board processing |
No |
| Mobile downlink frequencies
(MHz) |
2483.5 - 2500.0 (S-band) |
| Mobile uplink frequencies
(MHz) |
1610.0 - 1626.5 (L-band) |
| Multiple access scheme |
CDMA |
| Voice circuit capacity /
satellite |
2800 |
| CORE BUS
SPECIFICATIONS |
| Prime Contractor |
Space
Systems/Loral |
| Platform |
LS-400 |
| Launch Mass |
450 kg (990
lb) |
| Dry Mass |
400 kg (880 lb) |
| Design Life |
7.5 years |
STRUCTURE |
| Dimensions (H x W x L) |
-- |
| Construction |
-- |
POWER SYSTEM |
| Payload Power (EOL) |
|
| Solar Arrays |
|
ATTITUDE CONTROL SYSTEM |
| Stabilization |
3-axis |
