Complete System for Mobile Communications
| Customer |
Thuraya Satellite Telecommunications Co. Ltd.,
Abu Dhabi, United Arab Emirates |
|---|---|
| Product | GEO-Mobile satellite communications system Boeing GEM satellite Primary gateway station 235,000 telephones |
| Launch Date | Oct. 20, 2000 |
| Vehicle | Sea Launch |
| Orbital Slot | 44° East Longitude |
| Contract life | 12 years |
An estimated 2.3 billion people live in the region served by the Thuraya mobile communications system, which began commercial operations in 2001. Boeing Satellite Development Center built the complete turnkey system under a contract singed on Sept. 11, 1997. This included the manufacture and launch of Thuraya-1, a high-power Boeing GEM satellite, as well as insurance, ground facilities and user handsets. A second spacecraft was ordered as a ground spare, with an option for a third satellite. The coverage area encompasses the Middle East, North and Central Africa, Europe, Central Asia and the Indian subcontinent. Thuraya-1 was successfully launched on Oct. 20, 2000.
The satellites are built at Boeing Satellite Development Center's Integration and Test Complex near Los Angeles International Airport. Hughes Network Systems (HNS) is providing the ground facilities. HNS and Ascom of Switzerland are providing the 235,000 handsets.
Thuraya-1 is the first satellite in the Boeing GEM series. This product line expands Boeing's offerings beyond satellite manufacturing, to integrate a high-power geosynchronous satellite (derived from the Boeing 702 body-stabilized design) with a ground segment and user handsets, to provide a range of cellular-like voice and data services over a large geographic region. The Thuraya ground segment includes terrestrial gateways plus a collocated network operations center and satellite control facility in the UAE.
Thuraya offers GSM-compatible mobile telephone services, transmitting and receiving calls through a single 12.25-meter-aperture reflector. The satellite employs state-of-the-art on-board digital signal processing to create more than 200 spot beams that can be redirected on-orbit, allowing the Thuraya system to adapt to business demands in real time. Calls are routed directly from one handheld unit to another, or to a terrestrial network. The system has the capacity for 13,750 simultaneous voice circuits.
THURAYA SPECIFICATIONS
| L-band | 128 active elements 17-w SSPAs |
|---|---|
| C-band | 2 active (2 spare) feeder link 125-w TWTAs |
| Solar Beginning of life End of life Panels |
13 kw 11 kw 2 wings of 4 panels each w/dual-junction gallium arsenide cells |
|---|---|
| Batteries | 250 A-hr cells |
| Liquid apogee motor | 98 lbf (436N) |
|---|---|
| Stationkeeping thrusters (bipropellant) |
2 x 2 lbf (10N) 8 x 5 lbf (22N) |
|
12.25 m (40 ft) x 16 m (52 ft) mesh transmit-receive reflector 128-element dipole L-band feed array 1.27 m round dual-polarized shaped reflector for C-band communications link |
| In orbit | L, solar arrays: 34.5 m (113 ft) W, antennas: 17 m (55.7 ft) |
|---|---|
| Stowed | H: 7.6 m (25 ft) W: 3.75 m x 3.75 m (12.3 ft) |
| Weights Launch In orbit (beginning of life) |
5250 kg (11,576 lb) 3200 kg (7056 lb) |
Public Relations
Boeing
P.O. Box 92919 (S10/S323)
Los Angeles, CA 90009
USA
(310) 364-6363
www.boeing.com/satellite
