NASA NTRS · 19770059917
Seasat-A attitude control system
Abstract
The Seasat-A attitude control system controls the attitude of the satellite system during injection into final circular orbit after Atlas boost, during orbit adjust and trim phases, and throughout the 3-year mission. Ascent and injection guidance and attitude control are provided by the Agena spacecraft with a gyrocompassed mass expulsion system. On-orbit attitude control functions are performed by a system that has its functional roots in the gravity-gradient momentum bias technology. The paper discusses hardware, control laws, and simulation results.
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Weiss, R., Rodden, J. J., Hendricks, R. J.. 1977-01-01. Seasat-A attitude control system. https://ntrs.nasa.gov/citations/19770059917
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