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Multidisciplinary Control of a Sparse Interferometric Array Satellite Testbed

Chung, Soon-Jo and LoBosco, David M. and Miller, David W. and Blaurock, Carl (2003) Multidisciplinary Control of a Sparse Interferometric Array Satellite Testbed. In: AIAA Guidance, Navigation, and Control Conference and Exhibit 2003. American Institute of Aeronautics and Astronautics (AIAA) , Reston, VA, Art. No.-2003.

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The MIT Adaptive Reconnaissance Golay-3 Optical Satellite (ARGOS) is a wide-angle Fizeau interferometer spacecraft testbed. Designing a space-based interferometer, which requires such high tolerances on pointing and alignment for its apertures, presents unique multidisciplinary challenges in the areas of structural dynamics, controls and multi-aperture phasing active optics. In meeting these challenges, emphasis is placed on modularity in spacecraft subsystems and optics as a means of allowing expandability and upgradeability. For the interferometer to function properly, unique methods of coherent wave front sensing are developed and used for error detection in control of the Fast Steering Mirrors (FSMs). The space environment is simulated by floating ARGOS on a frictionless air-bearing that allows it to track fast moving satellites such as the International Space Station (ISS), planets or point stars. A System Identification is performed on ARGOS to determine its dynamic properties and to design optimal controllers for the Attitude Control System (ACS). ACS sensors include an electronic compass with a 2-axis tip-tilt sensor, a viewfinder camera with centroiding algorithm, and a 3-axis rate gyroscope. Nonlinear, quaternion-based control is employed using reaction wheels as the spacecraft's actuators.

Item Type:Book Section
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URLURL TypeDescription
Chung, Soon-Jo0000-0002-6657-3907
Miller, David W.0000-0001-6099-0614
Additional Information:© 2003 American Institute of Aeronautics and Astronautics. This research was supported by the NRO Director’s Innovation Initiative (DII) and Mide Technology Corporation. Authors would like to thank Alice K. Liu at NASA Goddard Space Flight Center for her initial contribution to the ARGOS attitude control system.
Funding AgencyGrant Number
National Reconnaissance OfficeUNSPECIFIED
Mide Technology CorporationUNSPECIFIED
Subject Keywords:sparse aperture, multiple-aperture optical systems, fizeau interferometer, phased telescope array, attitude control systems, control of optomechanical systems
Record Number:CaltechAUTHORS:20161130-104041149
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Official Citation:Soon-Jo Chung, David Lobosco, David Miller, and Carl Blaurock. "Multidisciplinary Control of a Sparse Interferometric Array Satellite Testbed", AIAA Guidance, Navigation, and Control Conference and Exhibit, Guidance, Navigation, and Control and Co-located Conferences, ()
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:72443
Deposited By: Ruth Sustaita
Deposited On:30 Nov 2016 21:56
Last Modified:11 Nov 2021 05:01

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