Title page for ETD etd-21098-21163

Type of Document Master's Thesis
Author Sanchez, Maria Cristina
Author's Email Address masanch2@vt.edu
URN etd-21098-21163
Title Optical Analysis of a Linear-Array Thermal Radiation Detector for Geostationary Earth Radiation Budget Applications
Degree Master of Science
Department Mechanical Engineering
Advisory Committee
Advisor Name Title
Mahan, James Robert Committee Chair
Scott, Elaine P. Committee Member
Thomas, James R. Jr. Committee Member
  • optical cross-talk
  • Linear-array thermal radiation detector
  • Monte-Carlo ray-trace method
  • cavity effect
Date of Defense 1998-03-06
Availability unrestricted
The Thermal Radiation Group, a laboratory in the

Department of Mechanical Engineering at Virginia Polytechnic

Institute and State University, is currently working to

develop a new technology for thermal radiation detectors.

The Group is also studying the viability of replacing

current Earth Radiation Budget radiometers with this new

concept. This next-generation detector consists of a

thermopile linear array thermal radiation detector.

The principal objective of this research is to develop

an optical model for the detector and its cavity.

The model based on the Monte-Carlo ray-trace (MCRT) method,

permits parametric studies to optimize the design of the

detector cavity and the specification of surface optical

properties. The model is realized as a FORTRAN program

which permits the calculation of quantities related to

the cross-talk among pixels of the detector and radiation

exchange among surfaces of the cavity. An important

capability of the tool is that it provides estimates of

the discrete Green's function that permits partial

correction for optical cross-talk among pixels of the array.

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