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Attitude Determination Methods

Attitude Determination Methods. Brienne Bogenberger January 18, 2004 Dynamics & Control Group Lead, Attitude Determination & Control (ADCS). Attitude Determination Devices. Star Tracker Effective attitude determination for spinning spacecraft Flight-proven hardware

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Attitude Determination Methods

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  1. Attitude Determination Methods Brienne Bogenberger January 18, 2004 Dynamics & Control Group Lead, Attitude Determination & Control (ADCS)

  2. Attitude Determination Devices • Star Tracker • Effective attitude determination for spinning spacecraft • Flight-proven hardware • Sun Sensor – DSS2 Digital Sun Sensor • Optic head mass: ~.35 kg • Optic head size size: 86x50x30 mm • Power dissipation: 0.5 W • Accuracy: 0.05° (FOV ±32°) 0.1° (FOV ±32° - ±64°) BATC CT-63x Series Star Tracker

  3. ADCS Development Information • Vehicle Configuration • Mission Stage • Orbit Insertion, Rendezvous, Transfer Phase, Maneuvers • Location of crew/movement • Disturbance Environment Analysis • Gravity-gradient torque, aerodynamic torque, torque due to magnetic disturbance, solar disturbance • Spacecraft Control Options

  4. References • Ball Aerospace & Technologies, Corp. • http://www.ballaerospace.com/ct63x.html • http://www.ballaerospace.com/ct611.html • Texas Space Grant Consortium • http://www.tsgc.utexas.edu/archive/subsystems/sensors.pdf • Astro Research Corp. • http://www.astro-r.co.jp/product/Sun%20Sensor.pdf

  5. Additional Options • Star Tracker • Autonomous attitude sensor – outputs an attitude quaternion • Flight-proven hardware • Man-rated – Space Shuttle Star Tracker * Based on CT-601 available data

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