Type of Document Master's Thesis Author Sorensen, Ira Joseph Author's Email Address email@example.com URN etd-110498-120720 Title Analytical and Experimental Characterization of a Linear-Array Thermopile Scanning Radiometer for Geo-Synchronous Earth Radiation Budget Applications Degree Master of Science Department Mechanical Engineering Advisory Committee
Advisor Name Title Mahan, James Robert Committee Chair Priestley, Kory J. Committee Member Vick, Brian L. Committee Member Keywords
- Earth radiation budget
- thermopile radiation detectors
Date of Defense 1998-11-30 Availability unrestricted AbstractThe Thermal Radiation Group, a laboratory in the department
of Mechanical Engineering at Virginia Polytechnic Institute and
State University, is currently working towards the development of
a new technology for cavity-based radiometers. The radiometer
consists of a 256-element linear-array thermopile detector
mounted on the wall of a mirrored wedge-shaped cavity.
The objective of this research is to provide analytical and
experimental characterization of the proposed radiometer. A
dynamic end-to-end opto-electrothermal model is developed to
simulate the performance of the radiometer. Experimental results
for prototype thermopile detectors are included. Also
presented is the concept of the discrete Green's function to
characterize the optical scattering of radiant energy in the
cavity, along with a data-processing algorithm to correct for the
scattering. Finally, a parametric study of the sensitivity of the discrete
Green's function to uncertainties in the surface properties of the
cavity is presented.
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