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Design and implementation of sparse aperture imaging systems

Chung, Soon-Jo and Miller, David W. and de-Weck, Olivier L. (2002) Design and implementation of sparse aperture imaging systems. In: Highly Innovative Space Telescope Concepts. Proceedings of SPIE. No.4849. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 181-192. ISBN 0-8194-4628-9.

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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 and implementation phases of ARGOS. A preliminary assess-ment 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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URLURL TypeDescription
Chung, Soon-Jo0000-0002-6657-3907
Miller, David W.0000-0001-6099-0614
Additional Information:© 2002 International Society for Optical Engineering. This research was supported by the NRO Director's Innovation Initiative (DII) under contracts number, NRO-000-01-C-0207.
Funding AgencyGrant Number
National Reconnaissance OfficeNRO-000-01-C-0207
Series Name:Proceedings of SPIE
Issue or Number:4849
Record Number:CaltechAUTHORS:20161121-093035571
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Official Citation:Soon-Jo Chung ; David W. Miller ; Olivier L. de Weck; Design and implementation of sparse aperture imaging systems. Proc. SPIE 4849, Highly Innovative Space Telescope Concepts, 181 (December 1, 2002); doi:10.1117/12.460077.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:72192
Deposited By: Ruth Sustaita
Deposited On:21 Nov 2016 19:17
Last Modified:11 Nov 2021 04:57

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