{"id":{"repo_id":"vt","oai_identifier":"oai:vtechworks.lib.vt.edu:10919/82035"},"canonical_url":"https://search.dev.ndltd.org/etd/vt/oai:vtechworks.lib.vt.edu:10919/82035","repository":{"repo_id":"vt","name":"Virginia Tech","base_url":"https://vtechworks.lib.vt.edu/oai/request"},"display":{"title":"Thermal Analysis of the Detector in the Radiation Budget Instrument (RBI)","abstract":"Earth radiation budget instruments are devices designed to study global climate change. These instruments use telescopes embarked on low-earth-orbit satellites to measure Earth emitted and reflected solar radiation. Radiation is sensed as temperature changes caused by radiation absorbed during scans of the earth on a delicate gold-black coated detector. This work is part of a larger effort to develop an end-to-end dynamic electro-thermal model, based on first-principles, for the next generation of earth radiation budget instruments, the Radiation Budget Instrument (RBI). A primary objective of this effort is to develop a numerical model of the detector to be used on RBI. Specifically, the sensor model converts radiation arriving at the detector, collimated and focused through telescopes, into sensible heat; thereby producing a voltage. A mathematical model characterizing this sensor is developed. Using a MATLAB algorithm, an implicit finite-volume scheme is implemented to determine the model solution. Model parameters are tuned to replicate experimental data using a robust parameter estimation scheme. With these model parameters defined, the electro-thermal sensor model can be used, in conjunction with the remaining components of the end-to-end model, to provide insight for future interpretation of data produced by the RBI.","abstract_html":"Earth radiation budget instruments are devices designed to study global climate change. These instruments use telescopes embarked on low-earth-orbit satellites to measure Earth emitted and reflected solar radiation. Radiation is sensed as temperature changes caused by radiation absorbed during scans of the earth on a delicate gold-black coated detector. This work is part of a larger effort to develop an end-to-end dynamic electro-thermal model, based on first-principles, for the next generation of earth radiation budget instruments, the Radiation Budget Instrument (RBI). A primary objective of this effort is to develop a numerical model of the detector to be used on RBI. Specifically, the sensor model converts radiation arriving at the detector, collimated and focused through telescopes, into sensible heat; thereby producing a voltage. A mathematical model characterizing this sensor is developed. Using a MATLAB algorithm, an implicit finite-volume scheme is implemented to determine the model solution. Model parameters are tuned to replicate experimental data using a robust parameter estimation scheme. With these model parameters defined, the electro-thermal sensor model can be used, in conjunction with the remaining components of the end-to-end model, to provide insight for future interpretation of data produced by the RBI.","abstract_has_math":false,"creators":["Pfab, Jonathan Francis"],"institution":"Virginia Tech","degree_name":"Master of Science","degree_level":"masters","degree_discipline":"Mechanical Engineering","degree_department":"Mechanical Engineering","school":null,"contributors":[],"advisors":[],"committee_chairs":["Vick, Brian L."],"committee_members":["Nguyen, Vinh","Mahan, James R."],"year":2018,"date_issued":"2018-02-06","date_published":"2018-02-06","updated_at":"2026-07-22T22:18:47Z","subjects":["Radiometry","Parameter Estimation","Thermal Analysis","Radiation Budget Instrument","Gold-black Detector","Remote Sensing"],"languages":[],"rights":["In Copyright"],"rights_urls":["http://rightsstatements.org/vocab/InC/1.0/"],"identifier_entries":[{"key":"dc:identifier.other","label":"Dc Identifier Other","values":["vt_gsexam:13907"],"render_values":[{"text":"vt_gsexam:13907","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/10919/82035","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.committeechair","label":"Committee Chair","values":["Vick, Brian L."]},{"key":"dc:contributor.committeemember","label":"Committee Member","values":["Nguyen, Vinh","Mahan, James R."]},{"key":"dc:contributor.department","label":"Department","values":["Mechanical Engineering"]},{"key":"dc:creator","label":"Author","values":["Pfab, Jonathan Francis"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2018-02-07T09:00:23Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2018-02-07T09:00:23Z"]},{"key":"dc:date.issued","label":"Date","values":["2018-02-06"]},{"key":"dc:publisher","label":"Institution","values":["Virginia Tech"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Mechanical Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Virginia Polytechnic Institute and State University"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Radiometry","Parameter Estimation","Thermal Analysis","Radiation Budget Instrument","Gold-black Detector","Remote Sensing"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:rights","label":"Dc Rights","values":["In Copyright"]},{"key":"dc:rights.uri","label":"Rights URI","values":["http://rightsstatements.org/vocab/InC/1.0/"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.other","label":"Dc Identifier Other","values":["vt_gsexam:13907"]},{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/10919/82035"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Earth radiation budget instruments are devices designed to study global climate change. These instruments use telescopes embarked on low-earth-orbit satellites to measure Earth emitted and reflected solar radiation. Radiation is sensed as temperature changes caused by radiation absorbed during scans of the earth on a delicate gold-black coated detector. This work is part of a larger effort to develop an end-to-end dynamic electro-thermal model, based on first-principles, for the next generation of earth radiation budget instruments, the Radiation Budget Instrument (RBI). A primary objective of this effort is to develop a numerical model of the detector to be used on RBI. Specifically, the sensor model converts radiation arriving at the detector, collimated and focused through telescopes, into sensible heat; thereby producing a voltage. A mathematical model characterizing this sensor is developed. Using a MATLAB algorithm, an implicit finite-volume scheme is implemented to determine the model solution. Model parameters are tuned to replicate experimental data using a robust parameter estimation scheme. With these model parameters defined, the electro-thermal sensor model can be used, in conjunction with the remaining components of the end-to-end model, to provide insight for future interpretation of data produced by the RBI."]},{"key":"dc:description.abstractgeneral","label":"General Abstract","values":["Earth radiation budget instruments are devices designed to study global climate change. These instruments use telescopes embarked on low-earth-orbit satellites to measure radiation exiting the atmosphere of the Earth. As the atmospheric science community works to design and develop the next generation of these instruments, a need for a model capable of simulating operating performance has arisen. This work is part of a larger effort to develop a complete model for the next generation of Earth radiation budget instruments, the Radiation Budget Instrument (RBI). A primary objective of this effort is to develop a model of a detector to be used on the RBI. The modelling techniques used to characterize the detector are presented in this work. Once the model has been developed, optimal model parameters are determined to tune the model. With these model parameters defined, the detector model can be used, in conjunction with the remaining pieces of the overall end-to-end model, to provide insight for future interpretation of data produced by the RBI."]},{"key":"dc:description.degree","label":"Dc Description Degree","values":["Master of Science"]},{"key":"dc:format.medium","label":"Dc Format Medium","values":["ETD"]},{"key":"dc:title","label":"Title","values":["Thermal Analysis of the Detector in the Radiation Budget Instrument (RBI)"]}]}],"canonical_facts":{"dc:contributor.committeechair":["Vick, Brian L."],"dc:contributor.committeemember":["Nguyen, Vinh","Mahan, James R."],"dc:contributor.department":["Mechanical Engineering"],"dc:creator":["Pfab, Jonathan Francis"],"dc:date.accessioned":["2018-02-07T09:00:23Z"],"dc:date.available":["2018-02-07T09:00:23Z"],"dc:date.issued":["2018-02-06"],"dc:description.abstract":["Earth radiation budget instruments are devices designed to study global climate change. 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A primary objective of this effort is to develop a model of a detector to be used on the RBI. The modelling techniques used to characterize the detector are presented in this work. Once the model has been developed, optimal model parameters are determined to tune the model. With these model parameters defined, the detector model can be used, in conjunction with the remaining pieces of the overall end-to-end model, to provide insight for future interpretation of data produced by the RBI."],"dc:description.degree":["Master of Science"],"dc:format.medium":["ETD"],"dc:identifier.other":["vt_gsexam:13907"],"dc:identifier.uri":["http://hdl.handle.net/10919/82035"],"dc:publisher":["Virginia Tech"],"dc:rights":["In Copyright"],"dc:rights.uri":["http://rightsstatements.org/vocab/InC/1.0/"],"dc:subject":["Radiometry","Parameter Estimation","Thermal Analysis","Radiation Budget Instrument","Gold-black Detector","Remote Sensing"],"dc:title":["Thermal Analysis of the Detector in the Radiation Budget Instrument (RBI)"],"dc:type":["Thesis"],"thesis:degree_discipline":["Mechanical Engineering"],"thesis:degree_level":["masters"],"thesis:degree_name":["Master of Science"],"thesis:institution_name":["Virginia Polytechnic Institute and State University"]},"updated_at":"2026-07-22T22:18:47Z"}