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Design and Integration of an Adaptive Controller for a Fourier Transform Spectrometer

Yiu, Patrick and Keymeulen, Didier and Berisford, Dan and Hand, Kevin and Carlson, Robert and Wadsworth, Winthrop and Dybwad, Jens Peter and Levy, Ralph (2014) Design and Integration of an Adaptive Controller for a Fourier Transform Spectrometer. In: Adaptive Hardware and Systems (AHS). IEEE , Piscataway, NJ, pp. 285-292. ISBN 978-1-4799-5356-1.

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This paper presents the design and integration of an adaptive controller for CIRIS (Compositional InfraRed Interferometric Spectrometer) on a stand-alone field programmable gate array (FPGA) architecture. CIRIS is a novel take on traditional Fourier Transform Spectrometers (FTS) and replaces linearly moving mirrors (characteristic of Michelson interferometers) with a constant-velocity rotating refractor to variably phase shift and alter the path length of incoming light. This design eliminates the need for periodically accelerating/decelerating mirrors inherent to canonical Michelson designs and allows for a compact and robust device, making it ideal for spaceborne measurements in the near-IR to thermal-IR band (2-12 μm) on planetary exploration missions. The instrument's embedded microcontroller is implemented on a VIRTEX-5 FPGA with the aim of sampling the instrument's detector and optical rotary encoder in order to construct an interferogram. Subsequent signal processing, including resampling, Fast Fourier Transform (FFT), filtering, and dispersion correction techniques are applied in real-time to compose the sample spectrum. The instrument's FPGA controller is demonstrated with the FTS to highlight its suitability for implementation in space systems.

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Hand, Kevin0000-0002-3225-9426
Additional Information:© 2014 IEEE. The authors thank the California Institute of Technology Summer Undergraduate Research Fellowship (SURF) program and donors Charles and Valerie Elachi for their generous financial support and role in funding this project. The research described in this paper was carried out at the Jet Propulsion Laboratory, California Institute of Technology.
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Caltech Summer Undergraduate Research Fellowship (SURF)UNSPECIFIED
Charles and Valerie ElachiUNSPECIFIED
Record Number:CaltechAUTHORS:20150107-081050517
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Official Citation:Yiu, P.; Keymeulen, D.; Berisford, D.; Hand, K.; Carlson, R.; Wadsworth, W.; Dybwad, J.P.; Levy, R., "Design and integration of an adaptive controller for a Fourier Transform Spectrometer," Adaptive Hardware and Systems (AHS), 2014 NASA/ESA Conference on , vol., no., pp.285,292, 14-17 July 2014 doi: 10.1109/AHS.2014.6880189
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:53252
Deposited On:07 Jan 2015 20:43
Last Modified:10 Nov 2021 19:49

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