Procesamiento de señales de un radiómetro de ondas milimétricas para obtener perfiles de ozono y estudios de la radiación solar UV en superficie.
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2017-03-28
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Facultad Regional Buenos Aires
Abstract
Los objetivos principales de esta tesis son el procesamiento de señales provenientes de un radiómetro de ondas milimétricas para la obtención de perfiles de ozono y de un radiómetro banda angosta GUV-541 para el estudio de la radiación UV en superficie y la obtención de parámetros atmosféricos. Ambos instrumentos se encuentran instalados en el Observatorio Atmosférico de la Patagonia Austral (OAPA).
En esta tesis se describen los algoritmos desarrollados e implementados para el procesamiento de señales observadas por el radiómetro de ondas milimétricas. El procesamiento de señales radiométricas mencionado se conoce como “proceso de inversión” e involucra cálculos matemáticos y la utilización de un modelo de transferencia radiativa para finalmente obtener los perfiles de ozono. Para la inversión de estos perfiles, fue necesario adquirir conocimientos e implementar el modelo ARTS (Atmospheric Radiative Transfer Simulator) el cual permite el cálculo de espectros en el rango de las ondas milimétricas y micrométricas. Este modelo es ampliamente utilizado y citado a nivel mundial dentro de este campo de aplicación.
Otro objetivo abordado en el marco de esta tesis es el estudio de la radiación UV en superficie y el incremento de las capacidades instrumentales del radiómetro solar multifiltro de banda angosta GUV-541 a través de la obtención de la síntesis de vitamina D mediante el procesamiento de señales medidas con este instrumento.
The main objectives of this thesis are the processing of signals observed from a millimeter wave radiometer to obtain ozone profiles and signals from a narrow band filter radiometer GUV-541 for study the surface UV radiation and obtain of atmospheric parameters. Both instruments are installed in the Atmospheric Observatory of Southern Patagonia (OAPA). This thesis describes the algorithms developed and implemented for the processing of signals observed by the millimeter wave radiometer. The aforementioned radiometric signal processing is known as the "inversion method" and involves mathematical calculations and the use of a radiative transfer model to finally obtain the ozone profiles. For the investment of these profiles, it was necessary to acquire knowledge and implement the ARTS model (Atmospheric Radiative Transfer Simulator) which allows the calculation of spectra in the range of millimeter and micrometric waves. This model is widely used and cited worldwide within this field of application. Another objective addressed in the framework of this thesis is the study of surface UV radiation and increase the instrumental capabilities of the narrow band multifilter solar radiometer GUV-541 through obtaining the synthesis of vitamin D through the processing of signals measured with this instrument.
The main objectives of this thesis are the processing of signals observed from a millimeter wave radiometer to obtain ozone profiles and signals from a narrow band filter radiometer GUV-541 for study the surface UV radiation and obtain of atmospheric parameters. Both instruments are installed in the Atmospheric Observatory of Southern Patagonia (OAPA). This thesis describes the algorithms developed and implemented for the processing of signals observed by the millimeter wave radiometer. The aforementioned radiometric signal processing is known as the "inversion method" and involves mathematical calculations and the use of a radiative transfer model to finally obtain the ozone profiles. For the investment of these profiles, it was necessary to acquire knowledge and implement the ARTS model (Atmospheric Radiative Transfer Simulator) which allows the calculation of spectra in the range of millimeter and micrometric waves. This model is widely used and cited worldwide within this field of application. Another objective addressed in the framework of this thesis is the study of surface UV radiation and increase the instrumental capabilities of the narrow band multifilter solar radiometer GUV-541 through obtaining the synthesis of vitamin D through the processing of signals measured with this instrument.
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Doctorado en Ingeniería, Procesamiento de Señales e Imágenes, Radiómetro de Ondas Milimétricas, Ozono Estratomesosférico, Radiación UV, Millimeter Wave Radiometer, Signals Processing, UV Radiation
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