Type of Document	Master's Thesis
Author	Haeffelin, Martial
URN	etd-12302008-063832
Title	A numerical study of equivalence in scanning thermistor bolometer radiometers for earth radiation budget applications
Degree	Master of Science
Department	Mechanical Engineering
Advisory Committee	Advisor Name Title Mahan, James Robert Committee Chair Dancey, Clinton L. Committee Member Vick, Brian L. Committee Member
Keywords	Radiometers
Date of Defense	1993-02-05
Availability	restricted
Abstract The Earth Radiation Budget Experiment (ERBE) consists of a suite of three scanning and four nonscanning radiometric instruments on each of three satellites which monitor the solar-reflected and Earth-emitted components of the Earth's radiative energy budget. A numerical model has been formulated to study the dynamic behavior and equivalence of the ERBE scanning thermistor bolometer radiometers. The finite-difference method is applied to the detector of the ERBE scanning radiometer to characterize its thermal and electrical dynamic behavior. The thermal analysis confirms the thermal time constant of the instrument claimed by the vendor. The electrical model reveals that the instrument can be very sensitive to spatial variations of the incident thermal radiation. However, the analysis confirms that the hypothesis of equivalence is justified for viewing typical Earth scenes.
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