Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990stin...9115210m&link_type=abstract
Unknown
Astronomy and Astrophysics
Astronomy
Attitude (Inclination), Data Acquisition, Estimates, Guidance Sensors, Inertial Reference Systems, Magnetometers, Star Trackers, Altitude, Detection, Nutation, Reference Stars, Spin
Scientific paper
An equation is derived, which gives the star detection times in the case of a small nutation angle or taper, as an explicit function of the spin meter. The CAESAR-F2 (Coordinated Auroral Experiments using Scatter And Rocket) data are adapted to the model function, in the framework on the measuring accuracy. The magnetometer data are transformed into a quasi-inertial system, which is defined by the despun spin of axis and a reference star. The coupling of the spin of axis to the astronomical fundamental system is carried out by an evaluation of the detection time differences for the various reference stars. Considered as one unit, the star sensor and the magnetometer allow an absolute attitude estimation, with one angular minute inaccuracy.
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