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In-space Shape Measurement of Large Planar Structures

Talon, T. and Pellegrino, S. (2017) In-space Shape Measurement of Large Planar Structures. In: 4th AIAA Spacecraft Structures Conference. American Institute of Aeronautics and Astronautics , Reston, VA, Art. No. 2017-1116. ISBN 978-1-62410-455-8.

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A measurement and integration scheme is proposed to estimate the shape of a large planar structure in space. Lightweight sun sensors distributed on the structure measure the local angles relative to the sun. A reconstruction technique is introduced to estimate the shape of the satellite through a decomposition on a function basis. The estimated shape is determined by the coefficients associated with the basis functions which are calculated from the measurements. A trade-study to analyze the influence of different reconstruction schemes and the position of the sensors is presented. An optimization scheme minimizes the RMS error between the estimated and true shape. An experiment was conducted to show the feasibility and performance of the proposed system at the lab scale. Finally, a simulation of the accuracy of the presented solution on a 60 m space solar power module is performed. The expected error is 0.7 mm RMS using sensors every 30 cm.

Item Type:Book Section
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Pellegrino, S.0000-0001-9373-3278
Additional Information:© 2017 American Institute of Aeronautics and Astronautics. Published Online: 5 Jan 2017. This research was supported by the Northrop Grumman Corporation.
Group:GALCIT, Space Solar Power Project
Funding AgencyGrant Number
Northrop Grumman CorporationUNSPECIFIED
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AIAA Paper2017-1116
Record Number:CaltechAUTHORS:20190820-154603282
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Official Citation:In-space Shape Measurement of Large Planar Structures. Thibaud Talon and Sergio Pellegrino. 4th AIAA Spacecraft Structures Conference. January 2017.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:98051
Deposited By: Tony Diaz
Deposited On:20 Aug 2019 23:04
Last Modified:16 Nov 2021 17:36

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