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Attitude Determination and Control (ADCS)

Attitude Determination and Control (ADCS). Space Systems Product Development Spring 2001. Olivier L. de Weck Department of Aeronautics and Astronautics Massachusetts Institute of Technology ADCS Motivation Motivation Sensors: GPS, star trackers, limb In order to point and slew optical sensors, rate gyros, inertial systems, spacecraft Attitude Control measurement units provides coarse pointing while Control Laws optics Control provides fine Spacecraft Slew Maneuvers pointing Euler Angles Spacecraft Control Quaternions Spacecraft Stabilization Spin Stabilization Key Question: Gravity Gradient What are the pointing Three-Axis Control requirements for satellite ?

systems, spacecraft attitude control provides coarse pointing while ... Concept used in rotational kinematics to describe body orientation w.r.t. inertial frame Sequence of three angles and prescription for rotating one ... or “nutation” frequency of the body: 22

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  Control, Concept, Frequency, Attitudes, Attitude control

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