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Proceedings Paper

Bounding uncertainty in Monte Carlo ray-trace models
Author(s): Maria Cristina Sanchez; J. Robert Mahan; Felix J. Nevarez; Ira J. Sorensen
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Paper Abstract

In a previous effort the authors developed a methodology for describing uncertainty in thermal radiation Monte Carlo ray- trace (MCRT) analyses. An application to radiometric channels used in space-based observations such as those provided by NASA's Clouds and the Earth's Radiant Energy System (CERES) was reported.. In the previous study preliminary attempts were presented to confirm the theory. In the current effort extension and modifications of the previous theory are formulated and new examples are presented to confirm the extended theory. A generic MCRT- based computational environment that simulates radiative exchange among surfaces in enclosures is used to obtain performance estimates of a simple cavity-type thermal radiation detector. Standard statistical methods are used to interpret the results as uncertainties and their related confidence intervals. The example problem is used as a vehicle to verify the modified theory. The authors then demonstrate the theory in a more complex situation that of a high-level numerical model used to predict the dynamic opto- electro thermal behavior of the CERES radiometric channels.

Paper Details

Date Published: 12 December 2001
PDF: 8 pages
Proc. SPIE 4540, Sensors, Systems, and Next-Generation Satellites V, (12 December 2001); doi: 10.1117/12.450679
Show Author Affiliations
Maria Cristina Sanchez, Virginia Polytechnic Institute and State Univ. (United States)
J. Robert Mahan, Virginia Polytechnic Institute and State Univ. (United States)
Felix J. Nevarez, Polytechnic Univ. of Puerto Rico (United States)
Ira J. Sorensen, NASA Langley Research Ctr. (United States)

Published in SPIE Proceedings Vol. 4540:
Sensors, Systems, and Next-Generation Satellites V
Hiroyuki Fujisada; Joan B. Lurie; Konradin Weber; Joan B. Lurie; Konradin Weber, Editor(s)

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