Exploració per autor "Corbella Sanahuja, Ignasi"
Ara es mostren els items 22-41 de 216
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Banco automatizado para la medida de parámetros S, de ruido y características DC de transistores en oblea
Pradell i Cara, Lluís; Purroy, Francesc; Subirats, M.; Ballester, A.; Torres Torres, Francisco; O'Callaghan Castellà, Juan Manuel; Corbella Sanahuja, Ignasi (1994)
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Accés obertThe AMR Group has an automatized bench for the measurement of DC-characteristics, [S] parameters (45 MHz- 40 GHz) and noise parameters (2-26.5 GHz) of microwave on-wafer transistors. The hardware configuration is described, ... -
Baseline redundancy and radiometric sensitivity: a critical review
Bará Temes, Francisco Javier; Camps Carmona, Adriano José; Torres Torres, Francisco; Corbella Sanahuja, Ignasi (European Spatial Agengy (ESA), 1995)
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Accés obertWhen computing the radiometric resolution of an interferometric radiometer the correlation among the errors of different baselines is usually assumed negligible. ln this way: a) the radiometric sensitivity turns out to be ... -
Benefits of applying nodal sampling to SMOS data over semi-enclosed seas and strongly RFI-contaminated regions
González Gambau, Verónica; Olmedo, Estrella; Martinez, J.; Turiel, Antonio; Corbella Sanahuja, Ignasi; Oliva, Roger; Martín Neira, Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2018)
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Accés restringit per política de l'editorialRadio Frequency Interferences (RFI) are still an important source of contamination in SMOS data. The application of nodal sampling (NS) to brightness temperature images helps to mitigate the degradation that RFIs produce ... -
Boundary element method applied to polarimetric radiometry of rain events
Duffo Ubeda, Núria; Vall-Llossera Ferran, Mercedes Magdalena; Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Bará Temes, Francisco Javier; Torres Torres, Francisco (Institute of Electrical and Electronics Engineers (IEEE), 2000)
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Brightness-temperature retrival methods in synthetic aperture radiometers
Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Camps Carmona, Adriano José; Duffo Ubeda, Núria; Vall-Llossera Ferran, Mercedes Magdalena (IEEE, 2009-01)
Article
Accés obertBightness-temperature retrieval techniques for synthetic aperture radiometers are reviewed. Three different approaches to combine measured visibility and antenna temperatures, along with instrument characterization ... -
Calibratin of fully polarimetric radiometers: the LAURA radiometer
Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Duffo Ubeda, Núria; Vall-Llossera Ferran, Mercedes Magdalena; Torres Torres, Francisco; Bará Temes, Francisco Javier (2000)
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Calibration and experimental results of a two-dimensional interferometric radiometer laboratory prototype
Camps Carmona, Adriano José; Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Bará Temes, Francisco Javier (1997-09)
Article
Accés restringit per política de l'editorialIn recent years, Earth observation by means of aperture synthesis radiometry has received special attention by some space agencies as a possible solution to achieve high radiometric accuracy and spatial resolution at low ... -
Calibration and experimental results of a two-dimensional interferometric radiometer laboratory prototype
Camps Carmona, Adriano José; Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Bará Temes, Francisco Javier; Soler, Xavier (American Geophysical Union, 1997-09-01)
Article
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Calibration methods in large interferometric radiometers devoted to earth observation
Torres Torres, Francisco; Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Bará Temes, Francisco Javier; Duffo Ubeda, Núria; Vall-Llossera Ferran, Mercedes Magdalena (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
Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Duffo Ubeda, Núria; Durán Martínez, Israel; González Gambau, Verónica; Oliva Balagué, Roger; Closa, Josep; Martín Neira, Manuel (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
Torres Torres, Francisco; Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Bará Temes, Francisco Javier; Vall-Llossera Ferran, Mercedes Magdalena; Duffo Ubeda, Núria (2000)
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Calibration trade-off in large interferometric radiometers devoted to earth observation
Torres Torres, Francisco; Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Bará Temes, Francisco Javier; Duffo Ubeda, Núria; Vall-Llossera Ferran, Mercedes Magdalena (Centro Stampa, 1999)
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Caracterización de transistores de Microoendas mediante la técnica de Calibrción TRL
Pradell i Cara, Lluís; Sabater, C; Artal, E; Comerón Tejero, Adolfo; Corbella Sanahuja, Ignasi (-, 1989)
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Caracterización de transistores de microondas mediante la técnica de calibración TRL
Pradell i Cara, Lluís; Artal, Eduardo; Comerón Tejero, Adolfo; Corbella Sanahuja, Ignasi; Sabater, C. (1989)
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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
Barba, J.M.; Torres Torres, Francisco; Corbella Sanahuja, Ignasi (1992)
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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
Artal, Eduardo; Comerón Tejero, Adolfo; Corbella Sanahuja, Ignasi (1988-10)
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CI de microondas. Tecnologías
Artal, Eduardo; Comerón Tejero, Adolfo; Corbella Sanahuja, Ignasi (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
Corbella Sanahuja, Ignasi; Pradell i Cara, Lluís (Universidad de Málaga, 1992)
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Comparación entre técnicas de medida y modelización de transistores MESFET y HEMT discretos hasta 40 GHz
Pradell i Cara, Lluís; Corbella Sanahuja, Ignasi; Purroy Martín, Francesc; Cáceres, M. (Universidad de Málaga, 1992)
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Compensation of elevation angle variations in polarimetric brightness temperature measurements from airborne microwave radiometers
Corbella Sanahuja, Ignasi; Gasiewski, A.J.; Klein, Marian; Piepmeier, Jeffrey R. (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 ...