TY - RPRT
T1 - Summary of the Advanced Stellar Compass
T2 - Test and Verification Status
AU - Jørgensen, John Leif
PY - 1997
Y1 - 1997
N2 - The current version of the Advanced Stellar Compass (ASC) is an
improved implementation of the instrument developed for the Danish
Geomagnetic Research Satellite Ørsted. The Ørsted version was
successfully tested in space on the NASA sounding rocket
"Thunderstorm III", that was launched September 2. 1995. During
the flight, an attitude accuracy of 15-20 arcseconds was achieved,
in spite of the rotation speed of the payload of 6 deg/sec being 5
times higher than the design limit. The instrument, now ready for
flight and integrated in the Ørsted satellite, has an accuracy of
3" absolute, proven during several real-sky tests. The new version
of the instrument was developed in order to further miniaturize
the system, improve the update rate, the accuracy and the
robustness. Currently, this version has been successfully
integrated into two spacecraft; the Swedish micro satellite
"Astrid II" and the ESTEC/ESA test satellite TEAMSAT. Two
instruments for the German CHAMP satellite will be delivered in
1998. The instrument is the baseline attitude system for several
NASA satellites, such as the JPL-designed X2000-programme
AB - The current version of the Advanced Stellar Compass (ASC) is an
improved implementation of the instrument developed for the Danish
Geomagnetic Research Satellite Ørsted. The Ørsted version was
successfully tested in space on the NASA sounding rocket
"Thunderstorm III", that was launched September 2. 1995. During
the flight, an attitude accuracy of 15-20 arcseconds was achieved,
in spite of the rotation speed of the payload of 6 deg/sec being 5
times higher than the design limit. The instrument, now ready for
flight and integrated in the Ørsted satellite, has an accuracy of
3" absolute, proven during several real-sky tests. The new version
of the instrument was developed in order to further miniaturize
the system, improve the update rate, the accuracy and the
robustness. Currently, this version has been successfully
integrated into two spacecraft; the Swedish micro satellite
"Astrid II" and the ESTEC/ESA test satellite TEAMSAT. Two
instruments for the German CHAMP satellite will be delivered in
1998. The instrument is the baseline attitude system for several
NASA satellites, such as the JPL-designed X2000-programme
M3 - Report
BT - Summary of the Advanced Stellar Compass
ER -