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Design, Implementation and Operation of a Sparse Aperture Imaging Satellite Testbed

Chung, Soon-Jo and Miller, David W. (2002) Design, Implementation and Operation of a Sparse Aperture Imaging Satellite Testbed. In: Annual AIAA/USU Conference on Small Satellites, 2002. American Institute of Aeronautics and Astronautics , Logan, Utah, pp. 1-16.

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In order to better understand the technological difficulties involved in designing and building a sparse aperture array, the challenge of building a white light Golay-3 telescope was undertaken. The MIT Adaptive Reconnaissance Golay-3 Optical Satellite (ARGOS) project exploits wide-angle Fizeau interferometer technology with an emphasis on modularity in the optics and spacecraft subsystems. Unique design procedures encompassing the nature of coherent wavefront sensing, control and combining as well as various system engineering aspects to achieve cost effectiveness, are developed. To demonstrate a complete spacecraft in a 1-g environment, the ARGOS system is mounted on a frictionless air-bearing, and has the ability to track fast orbiting satellites like the ISS or the planets. Wavefront sensing techniques are explored to mitigate initial misalignment and to feed back real-time aberrations into the optical control loop. This paper presents the results and the lessons learned from the conceive, design, implement and operate phases of ARGOS. A preliminary assessment shows that the beam combining problem is the most challenging aspect of sparse optical arrays. The need for optical control is paramount due to tight beam combining tolerances. The wavefront sensing/control requirements appear to be a major technology and cost driver.

Item Type:Book Section
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Chung, Soon-Jo0000-0002-6657-3907
Miller, David W.0000-0001-6099-0614
Additional Information:© 2002.
Subject Keywords:sparse aperture, multiple-aperture optical systems, telescopes, fizeau interferometer, phased telescope array
Record Number:CaltechAUTHORS:20161220-112255420
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Official Citation:Chung, Soon-Jo, Miller, David W., “Design, Implementation and Operation of a Sparse Aperture Imaging Satellite Testbed,” 16th Annual AIAA/USU Conference on Small Satellites, SSC02-III-5, Logan, Utah, August 2002
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:72981
Deposited By: Ruth Sustaita
Deposited On:20 Dec 2016 20:19
Last Modified:03 Oct 2019 16:23

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