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State and model error estimation for elliptic systems: Applications to large antenna static shape determinationThis paper outlines the application of various estimation approaches to the problem of static shape determination for large antenna systems. The problem consists of estimating the shape of an antenna surface from measurements of its static deflection. The estimation schemes are based on any one of the modeling options of a single PDE for early insight and understanding, coarse-resolution multiple-PDE models for parametric studies and fine-resolution piecewise-continuum models for detailed design. For any one of these three models, estimator design can be developed using an infinite-dimensional approach, where the necessary finite-element truncation and approximation is conducted after the analytical design has taken place, or it can be based on a finite-dimensional approach, where the model is truncated before the estimation problem is formulated. One of the main objectives of the paper is to develop both approaches while simultaneously investigating their differences and similarities. Simulation results of an application of the finite-dimensional approach to a large parabolic reflector are presented.
Document ID
19830027825
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Rodriguez, G.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Scheid, R. E., Jr.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 11, 2013
Publication Date
July 1, 1983
Publication Information
Publication: Proc. of the Workshop on Appl. of Distributed System Theory to the Control of Large Space Struct.
Subject Category
Numerical Analysis
Accession Number
83N36096
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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