NDLI: An evaluation of the Xilinx Virtex-4 FPGA for on-board processing in an advanced imaging system

Content Provider	IEEE Xplore Digital Library
Author	Norton, C.D. Werne, T.A. Pingree, P.J. Geier, S.
Copyright Year	2009
Description	Author affiliation: Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, 91109-8099, USA (Norton, C.D.; Werne, T.A.; Pingree, P.J.; Geier, S.)
Abstract	The multi-angle spectro-polarimetric imager (MSPI) is an advanced camera system currently under development at JPL for possible future consideration on a satellite based Aerosol-Cloud-Environment (ACE) interaction study as outlined in the National Academies 2007 decadal survey. In an attempt to achieve necessary accuracy of the degree of linear polarization of better than 0.5%, the light in the optical system is subjected to a complex modulation designed to make the overall system robust against many instrumental artifacts that have plagued such measurements in the past. This scheme involves two photoelastic modulators that are beating in a carefully selected pattern against each other [1]. In order to properly sample this modulation pattern, each of the proposed nine cameras in the system needs to read out its imager array about 1000 times per second, resulting in two orders of magnitude more data than can typically be downlinked from the satellite. The onboard processing required to compress this data involves least-squares fits of Bessel functions to data from every pixel, effectively in real-time, thus requiring an on-board computing system with advanced data processing capabilities in excess of those commonly available for space flight
Starting Page	1
Ending Page	9
File Size	515659
Page Count	9
File Format	PDF
ISBN	9781424426218
ISSN	1095323X
DOI	10.1109/AERO.2009.4839460
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-03-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Field programmable gate arrays Cameras Hardware Satellites Optical modulation Software systems Optical imaging Optical polarization Optical design Robustness
Content Type	Text
Resource Type	Article
Subject	Aerospace Engineering Space and Planetary Science

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