CHAMP (Challenging Mini-Satellite Payload) is a German small satellite mission for geoscientific and atmospheric research and applications, managed by GFZ. With its highly precise, multifunctional and complementary payload elements (magnetometer, accelerometer, star sensor, GPS receiver, laser retro reflector, ion drift meter) and its orbit characteristics (near polar, low altitude, long duration) CHAMP will generate for the first time simultaneously highly precise gravity and magnetic field measurements over a 5 years period. This will allow to detect besides the spatial variations of both fields also their variability with time.
The three primary science objectives of the CHAMP mission are to provide
Following instrumentation was used:
For magnetic cleanliness reasons, the magnetometry assembly must be kept at some distance from the satellite. This is achieved by using a deployable boom mounted at the front end of the satellite. The length of the boom is approximately 4 m, thus guaranteeing that the magnetic strayfield at the location of the Overhauser magnetometer will be less than 0.5 nT
The boom consists of three segments: the outer part, carrying the Overhauser magnetometer, the middle segment with the optical bench on which two star sensor heads and two Fluxgate magnetometers are mounted, and the inner segment with the deployable part of the hinge.
CHAMP completed its mission and re-entered the Earth's atmosphere on 19 September 2010 after 10 years.
|Type / Application:||Earth Observation|
|Power:||Solar cells, batteries|
|Lifetime:||5 years (design); 10 years (reached)|
|Orbit:||454 km × 454 km, 87° SSO|
|CHAMP||2000-039B||15.07.2000||Pl LC-132/1||Kosmos-3M||with MITA, Bird-Rubin|