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A covariance analysis tool for assessing fundamental limits of SIM pointing performance.

Show simple item record Bayard, David S. Kang, Bryan H. 2011-09-22T19:43:33Z 2011-09-22T19:43:33Z 2007-08-26
dc.identifier.citation SPIE Optics and Photonics 2007, San Diego, California, August 26-30, 2007. en_US
dc.identifier.clearanceno 07-2261
dc.description.abstract This paper presents a performance analysis of the instrument pointing control system for NASA's Space Interferometer Mission (SIM). SIM has a complex pointing system that uses a fast steering mirror in combination with a multirate control architecture to blend feed forward information with feedback information. A pointing covariance analysis tool (PCAT) is developed specifically to analyze systems with such complexity. The development of PCAT as a mathematical tool for covariance analysis is outlined in the paper. PCAT is then applied to studying performance of SIM's science pointing system. The analysis reveals and clearly delineates a fundamental limit that exists for SIM pointing performance. The limit is especially stringent for dim star targets. Discussion of the nature of the performance limit is provided, and methods are suggested to potentially improve pointing performance. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2007. en_US
dc.subject pointing control en_US
dc.subject covariance analysis en_US
dc.subject fast steering mirrors en_US
dc.subject fundamental performance limits en_US
dc.title A covariance analysis tool for assessing fundamental limits of SIM pointing performance. en_US
dc.type Preprint en_US

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