| Mission type | Navigation |
|---|---|
| COSPAR ID | 2010-036A |
| SATCATno. | 36828 |
| Mission duration | 8 years |
| Spacecraft properties | |
| Bus | DFH-3 |
| Manufacturer | CAST |
| Start of mission | |
| Launch date | 31 July 2010, 21:30:04 (2010-07-31UTC21:30:04Z) UTC[1] |
| Rocket | Chang Zheng 3C |
| Launch site | XichangLC-2 |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Geosynchronous |
| Perigee altitude | 35,653 kilometres (22,154 mi) |
| Apogee altitude | 35,924 kilometres (22,322 mi) |
| Inclination | 54.47 degrees |
| Period | 23.93 hours |
| Epoch | 25 December 2013, 12:35:30 UTC[2] |
Compass-IGSO1, also known asBeidou-2 IGSO1 is aChinesenavigation satellite which will become part of theCompass navigation system. It was launched in July 2010, and became the fifth Compass satellite to be launched afterCompass-M1,G2,G1, andG3.
Compass-IGSO1 was launched at 21:30 GMT on 31 July 2010.[3] The launch used aLong March 3A carrier rocket, flying from theXichang Satellite Launch Centre. The satellite is developed in the basis of the DFH-3 satellite platform and has a lifespan of 8 years.
The primary instrument aboard Compass-IGSO1 is a navigation system operating in the L-band. Compass-IGSO1 is the second satellite of the Compass navigation system with an optical synchronization link. The timing functionality is provided by two instruments on board the space segment, the Laser Time Transfer (LTT) instrument consisting of a corner-cuberetroflector array (hexagonal shape 49 × 43 cm, 90 pcs, 33 mm diameter, 770 cm2 reflective area[4]) and asingle-photon avalanche diode based detector developed in cooperation withCTU.[5] Theground segment uses the dedicated Chinesesatellite laser ranging network. The combination of traditional passive laser ranging with active single photon detection aboard produces data for the ground-to-space oscillator time-base with 10−11 s precision.
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