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Optical analysis of a linear-array thermal radiation detector for geostationary Earth radiation budget applications

by Sa?nchez, Mari?a Cristina.

Abstract (Summary)
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. Agradecimientos Primero que todo quiero agradecer a mi “advisor” por su confianza ciega, apoyo incondicional e inmensa paciencia, y a Dr E. P. Scott y Dr. T. E. Diller por su disponibilidad para ser miembros de mi comité. Quiero agradecer también a mis compañeros del Grupo de Radiación Térmica: Katherine, Félix, Ira, Edwin, Joel y Stephanie, a mi paisano Juan Carlos y a los cordobeses Raúl y Sergio, quienes sin su ayuda esto hubiera sido mucho más difícil sino imposible. Al resto de mis amigos, muchas gracias por hacer de mi paso por Blacksburg y Virginia Tech una experiencia placentera y enriquecedora. Finalmente y de una manera muy especial, agradezco a mis padres y mi hermana por el enorme apoyo y quienes a pesar de la distancia hicieron lo posible por hacerme llegar su cariño y ánimo para seguir adelante. iii
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School:Virginia Polytechnic Institute and State University

School Location:USA - Virginia

Source Type:Master's Thesis

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