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Gyroless-extending the TIMED mission
The TIMED spacecraft is now it its eighth year of a two-year mission, amassing an unprecedented, uninterrupted collection of upper atmospheric data. Over the course of this time, degradation of the gyros has forced the need to allow operation without them. As a result, the attitude estimation algorithms have been enhanced to allow continued operation under gyroless conditions. This paper describes the algorithms implemented to perform attitude estimation with a tracker-only solution, as well as operational issues encountered ...
Published by: Published on:
YEAR: 2009   DOI: 10.2514/6.2009-5948
Spacecraft Attitude Determination
By spacecraft attitude, we mean how a spacecraft is oriented in space. Every spacecraft carries a complement of instruments, usually called a payload, that must be directed in some way
Shuster, Malcolm; Dellinger, Wayne;
Published by: Fundamentals of Space Systems Published on: