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The precision segmented reflectors: Moderate mission figure control subsystemA system concept for a space based segmented reflector telescope figure control subsystem is described. The concept employs a two phase architecture in which figure initialization and figure maintenance are independent functions. Figure initialization is accomplished by image sharpening using natural reference targets. Figure maintenance is performed by monitoring the relative positions and alignments of the telescope components using an optical truss. Actuation is achieved using precision positioners. Computer simulation results of figure initialization by pairwise segment coalignment/cophasing and simulated annealing are presented along with figure maintenance results using a wavefront error regulation algorithm. Both functions are shown to perform at acceptable levels for the class of submillimeter telescopes that are serving as the focus of this technology development effort. Component breadboard work as well as plans for a system testbed are discussed.
Document ID
19920015201
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Sevaston, G.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Redding, D.
(Draper, Charles Stark Lab., Inc., Houston TX , United States)
Lau, K.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Breckenridge, W.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Levine, B.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Nerheim, N.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Sirlin, S.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Kadogawa, H.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
September 6, 2013
Publication Date
December 1, 1991
Publication Information
Publication: ESA, Spacecraft Guidance, Navigation and Control Systems
Subject Category
Spacecraft Instrumentation
Accession Number
92N24444
Distribution Limits
Public
Copyright
Other
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