Computer Science – Performance
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20916401c&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #164.01; Bulletin of the American Astronomical Society,
Computer Science
Performance
2
Scientific paper
We summarize the goals and result-to-date of a ROSES/APRA-sponsored program to develop two of the major technologies needed to enable the design and construction of future large baseline, space-based Interferometric and Sparse Aperture Telescope missions (e.g., Stellar Imager, Life Finder, Black Hole Imager, and Planet Imager). The Fizeau Interferometer Testbed (FIT) is being used to develop and demonstrate nm-level, closed-loop optical control of mirrors (i.e., control of tip, tilt, piston, translation of array elements) and the overall system to keep multiple beams in phase and optimize imaging of a Fizeau interferometric system and to assess various image reconstruction algorithms (phase diversity, clean, maximum entropy method, etc.) for utility and accuracy. The Synthetic Imaging Formation Flying Testbed (SIFFT) is, in parallel, being used to develop and demonstrate algorithms for autonomous cm-level precision formation flying, which can be combined in the future with the higher precision optical control systems (e.g., those developed on the FIT) to fully enable synthetic aperture imaging systems. The ultimate goal of this research is the demonstration of closed-loop performance of a unified system which combines formation flying and nm-level optical control systems (based on analysis of the science data stream) to maintain phasing of a large array of space-borne mirrors, as needed for missions like those listed above, as well as smaller baseline Precursor missions that may pave the path to the larger strategic missions.
Carpenter Kenneth G.
Dogoda Peter
Liu Alex
Lyon Richard G.
Miller Daniel D.
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