Fidelity of telescope subsystem models and the influence on simulation accuracy

Deborah J. Howell; Olivier de Weck; David W. Miller

doi:10.1117/12.672618

26 June 2006 Fidelity of telescope subsystem models and the influence on simulation accuracy

Deborah J. Howell, Olivier de Weck, David W. Miller

Proceedings Volume 6271, Modeling, Systems Engineering, and Project Management for Astronomy II; 62710V (2006) https://doi.org/10.1117/12.672618
Event: SPIE Astronomical Telescopes + Instrumentation, 2006, Orlando, Florida , United States

Abstract

Analysis of complex interdisciplinary systems such as large telescopes is usually performed using simulation models due to the expense of hardware testbeds. The level of fidelity of these simulation models, or the relative closeness to which the model simulates reality for the behavior under investigation, is often not assessed in a quantitative manner. Rather, the model is described qualitatively as being of either "low" or "high" fidelity, often progressing from lower to higher fidelity models as the candidate designs are down-selected. This paper provides a quantitative assessment of fidelity for structural subsystems for large telescope models based on the Nyquist criterion, shows how it influences simulation accuracy, and applies it to a space telescope model. This metric will be useful for assessing the fidelity of an existing structural finite element telescope model or in creating a new model having sufficient fidelity (sufficient accuracy).

Citation Download Citation

Deborah J. Howell, Olivier de Weck, and David W. Miller "Fidelity of telescope subsystem models and the influence on simulation accuracy", Proc. SPIE 6271, Modeling, Systems Engineering, and Project Management for Astronomy II, 62710V (26 June 2006); https://doi.org/10.1117/12.672618

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