Títol:
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Analysis of correlation and total power radiometer front-ends using noise waves
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Autor/a:
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Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Camps Carmona, Adriano José; Duffo Ubeda, Núria; Vall-Llossera Ferran, Mercedes Magdalena; Rautiainen, Kimmo; Martín Neira, Manuel; Colliander, Andreas
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Altres autors:
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Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció |
Abstract:
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A complete and systematic noise analysis of radiometer front-ends, including both total power and correlation measurements, is presented. The procedure uses the concepts of noise waves and S-parameters, widely used in microwave systems design and takes into account full noise characterization of receivers including mismatch effects. The general formulation is compatible with known total power radiometer analysis and is specially appropriate in correlation radiometers for which the effect of nonideal components, such as input isolators, is analyzed. Along with numerical simulations, simple formulas are given to compute the measured visibility in nonideal conditions. The analysis is validated using experimental results consisting of correlation measurements of four receivers placed inside an anechoic chamber. Good agreement between theoretical predictions and experimental data is observed. |
Abstract:
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Peer Reviewed |
Matèries:
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-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Teledetecció -Boundary layer (Meteorology) -Microwave measurements -Earth sciences -Calibration -Remote sensing -S-parameters -calibration -microwave measurement -remote sensing -correlation measurement -interferometric aperture synthesis radiometry -microwave radiometry -microwave systems design -mismatch effects -noise analysis -noise characterization -noise waves -polarimetric radiometry -radiometer calibration -radiometer front-ends -total power measurement -Capa límit (Meteorologia) -Microones -- Mesurament -Ciències de la terra -Calibratge -Sensors remots |
Drets:
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Tipus de document:
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Article |
Publicat per:
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IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
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