Exploració per autor "Corbella Sanahuja, Ignasi"
Ara es mostren els items 30-49 de 216
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Calibration methods in large interferometric radiometers devoted to earth observation
(VSP, 2000-01)
Capítol de llibre
Accés restringit per política de l'editorialThis paper starts with a summary and classification of errors of any kind that corrupt the fundamental measurement performed by an InR (interferometric radiometer), the so-called visibilities. This summary is based on prior ... -
Calibration of the MIRAS Radiometers
(Institute of Electrical and Electronics Engineers (IEEE), 2018-12-21)
Article
Accés obertThe microwave imaging radiometer with aperture synthesis (MIRAS) is formed by 69 total power radiometers, of which three are the noise-injection type. Their calibration is reviewed on the basis of the data gathered during ... -
Calibration procedures in 2-D large interferometric radiometers study applied to the MIRAS/SMOS instrument
(2000)
Text en actes de congrés
Accés obert -
Calibration trade-off in large interferometric radiometers devoted to earth observation
(Centro Stampa, 1999)
Text en actes de congrés
Accés obert -
Caracterización de transistores de Microoendas mediante la técnica de Calibrción TRL
(-, 1989)
Text en actes de congrés
Accés obert -
Caracterización de transistores de microondas mediante la técnica de calibración TRL
(1989)
Text en actes de congrés
Accés obertIn this paper, the design of a Microstrip Test Fixture for TRL calibration is described. Experimental results for S-parameters measurement of a GaAs FET chip in the 3-22 GHz frequency range are presented. Repeatability of ... -
Caracterización del ruido de fase de los subsistemas que integran un oscilador sintetizado
(1992)
Text en actes de congrés
Accés obertA set of phase noise measurement techniques, based on the HP 3048A system, are compared in terms of major applications and limitations. To ilustrate the items, several significant measures are discussed. -
CI de microondas. Aplicaciones y mercado
(1988-10)
Article
Accés restringit per política de l'editorial -
CI de microondas. Tecnologías
(1988-09)
Article
Accés restringit per política de l'editorialLos circuitos integrados monolíticos de microondas presentan ventajas potenciales respecto de los circuitos híbridos habituales en cuanto a fiabilidad, reducido tamaño y peso, banda ancha y bajo coste. Se describe el estado ... -
Comparación entre medidas AC y DC de resistencias parásitas del circuito equivalente del MEFET
(Universidad de Málaga, 1992)
Text en actes de congrés
Accés obert -
Comparación entre técnicas de medida y modelización de transistores MESFET y HEMT discretos hasta 40 GHz
(Universidad de Málaga, 1992)
Text en actes de congrés
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Compensation of elevation angle variations in polarimetric brightness temperature measurements from airborne microwave radiometers
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2001-01-31)
Article
Accés obertThis paper presents a method for compensating the elevation angle fluctuations occurring in airborne radiometry due to aircraft roll and pitch. The correction is based on a radiative transfer model, and is demonstrated by ... -
Considerations about antenna pattern measurements of 2-D aperture synthesis radiometers
(IEEE, 2006-04-30)
Article
Accés obertAccurate measurement of the antenna voltage patterns of large-aperture synthesis radiometers is critical in order to achieve good radiometric accuracy, and a very time consuming and expensive task. Measurement requirements ... -
Considerations About Antenna Pattern Measurements of 2-D Aperture Synthesis Radiometers
(IEEE, 2006-04-30)
Article
Accés obertAccurate measurement of the antenna voltage patterns of large-aperture synthesis radiometers is critical in order to achieve good radiometric accuracy, and a very time consuming and expensive task. Measurement requirements ... -
Control automático de nivel (ALC) de un SSPA en banda Ka
(1991)
Text en actes de congrés
Accés obertThis communication describes the design of an Automatic Level Control (ALC) for the transmiter of a CODE (Co-operative Olympus Data Experiment) earth station. The goal of the ALC system is to keep constant the transmited ... -
Correcting the FRA systematic error in VTEC maps from SMOS radiometric data
(Institute of Electrical and Electronics Engineers (IEEE), 2022-10-17)
Article
Accés obertThe Faraday rotation (FR) is a nonnegligible effect at the L-band, which is the operation frequency of the Soil Moisture and Ocean Salinity (SMOS) mission. This effect introduces a rotation in the electromagnetic field ... -
Correction of spatial errors in SMOS brightness temperature images
(IEEE, 2011)
Text en actes de congrés
Accés restringit per política de l'editorialSystematic spatial errors in SMOS brightness temperature images are successfully estimated by using a statistical analysis of measured data. A constant multiplicative mask is derived by averaging spatial errors of a large ... -
Correlation denormalization in interferometric or polarametric radiometers: a unified approach
(IEEE, 2009-02)
Article
Accés obertThis paper presents a general analysis of correlation measurements in an interferometer or a radiometer based on noise injection and/or switching and measurement of normalized correlations (e.g., imaging synthetic aperture ... -
Criterios y métodos de reducción del ruido de fase en osciladores de microondas con MESFET
(1991)
Text en actes de congrés
Accés obertThis paper gives several building criteria for the design of microwave oscillators with MESFET (MESFET-MWO) in order to achieve low phase noise. From device low frequency noise model and identification of phase noise ... -
Denormalization of visibilities for in-orbit calibration of interferometric radiometers
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2006-10-31)
Article
Accés obertThis paper reviews the relative calibration of an interferometric radiometer taking into account the experimental results of the first batch of receivers developed in the frame of the European Space Agency's Soil Moisture ...
