Browsing by Author "Torres Torres, Francisco"
Now showing items 1-20 of 207
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1a sesión Música amb enginy. Una mirada transversal "Matemàtiques l i música"
Berenguer Sau, Jordi; Torres Torres, Francisco (2020-10-23)
Audiovisual
Open Access -
6a Jornada d'Igualtat de la UPC. Una mirada al present
Torres Torres, Francisco; Martín Mallofré, Agustí; Garrido Soriano, Núria; Pérez González, Juan Jesús; Fernández Canti, Rosa M. (2019-02-06)
Audiovisual
Open Access -
A new calibration technique for interferometric radiometers
Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Camps Carmona, Adriano José; Bará Temes, Francisco Javier (1998)
Conference report
Open AccessThis paper presents a new method for receiver calibration of interferometric radiometers. It is based on the distributed noise injection mechanism and it consists of fully calibrating the baseline error terms of the central ... -
A new space technology for ocean observation: the SMOS mission
Font Ferré, Jordi; Ballabrera Poy, Joaquim; Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Duffo Ubeda, Núria; Durán Martínez, Israel; Emelianov Kolomitski, Mikhail; Enrique González, Luis; Fernández Gallego, Pedro; Gabarró Prats, Carolina; González, Cristina; González, Veronica; Gourrion, J.; Guimbard, S.; Hoareau, N.; Julià, A; Kalaroni, S.; Konstantinidou, Anna; Aretxabaleta, L.; Martínez, Justino; Miranda, Jorge Miguel; Monerris Belda, Alessandra; Montero, Sergio; Mourre, B.; Pablos Hernández, Miriam; Pérez Villar, Fernando; Piles Guillem, Maria; Portabella, M.; Sabia, R.; Salvador, Joaquin; Talone, Marco; Torres Torres, Francisco; Turiel Martínez, Antonio; Vall-Llossera Ferran, Mercedes Magdalena; Villarino Villarino, Ramón (2012)
Article
Restricted access - publisher's policyCapability for sea surface salinity observation was an important gap in ocean remote sensing in the last few decades of the 20th century. New technological developments during the 1990s at the European Space Agency led to ... -
A novel digital IQ demodulation for interferometric radiometers
Corbella Sanahuja, Ignasi; Martín Neira, Manuel; Vilaseca, Roger; Catalán Artigas, Albert; Torres Torres, Francisco; Suess, Martin (Multidisciplinary Digital Publishing Institute (MDPI), 2021-03-02)
Article
Open AccessIn the frame of an SMOS follow-on operational mission, a new instrument design is being developed based on the lessons learned from MIRAS, the SMOS payload. To reduce hardware complexity and mass, digital In-phase Quadrature ... -
Advanced millimeter wave technology for mobile communications
Pradell i Cara, Lluís; Corbella Sanahuja, Ignasi; Comerón Tejero, Adolfo; Bará Temes, Francisco Javier; Artal, E.; Torres Torres, Francisco; Purroy, Francesc; Barlabe Dalmau, Antoni; Sales, V. (Institute of Electrical and Electronics Engineers (IEEE), 1993)
Conference report
Open Access -
Advances in calibration of the SMOS zero-baseline radiometers
Colliander, Andreas; Chae, Chunsik; Dinnat, Emmanuel Philippe; Oliva Balagué, Roger; Kainulainen, Juha; Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Martín Neira, Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2014)
Conference report
Restricted access - publisher's policyOver the course of the more than four-year mission several enhancements have been developed for the calibration of the zero-baseline radiometers of ESA's SMOS (Soil Moisture Ocean Salinity) mission. Here a particular ... -
Analisys of noise injection networks for interferometric radiometer calibration
Corbella Sanahuja, Ignasi; Camps Carmona, Adriano José; Torres Torres, Francisco; Bará Temes, Francisco Javier (IEEE Microwave Theory and Techniques Society, 2000-04)
Article
Open AccessAbstract: The spatial resolution of current space-borne Earth observation radiometers is limited by the physical antenna aperture. This is especially critical at L-band, which exhibits high sensitivity to soil moisture ... -
Analisys of noise-injection networks for interferometric-radiometer calibration
Corbella Sanahuja, Ignasi; Camps Carmona, Adriano José; Torres Torres, Francisco; Bará Temes, Francisco Javier (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2000-04-30)
Article
Open AccessThe spatial resolution of current space-borne Earth observation radiometers is limited by the physical antenna aperture. This is especially critical at L-band, which exhibits high sensitivity to soil moisture and sea surface ... -
Analysis of array distortion in a microwave interferometric radiometer: Application to the GeoSTAR project
Torres Torres, Francisco; Tanner, Alan B.; Brown, S. T.; Lambrigsten, Bjorn H. (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2007-07-31)
Article
Open Access -
Analysis of Correlation and Total Power Radiometer Front-Ends Using Noise Waves
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 (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2005-11-30)
Article
Open AccessA 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 ... -
Analysis of correlation and total power radiometer front-ends using noise waves
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 (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2005-11-30)
Article
Open AccessA 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 ... -
Angular resolution of two-dimensional, hexagonally sampled interferometric radiometers
Bará Temes, Francisco Javier; Camps Carmona, Adriano José; Torres Torres, Francisco; Corbella Sanahuja, Ignasi (1998-09)
Article
Restricted access - publisher's policyA theoretical analysis of the angular resolution of two-dimensional interferometric radiometers for Earth observation from low-orbit satellites and its degradation due to spatial decorrelation effects is presented. The ... -
Apertura inaugural
Torres Torres, Francisco; Lloveras Massana, Neus; Vilà Martí, Frederic; Morer Camo, Maria de la Paz (2018-04-19)
Audiovisual
Open AccessActe inaugural del II Foro Universidad, Diseño y Empresa a càrrec de: Francesc Torres - Rector de la UPC; Neus Lloveras - Alcaldesa de l'Ajuntament de Vilanoava i la Geltrú; Frederic Vilà - Director de la EPSEVG-UPC; Paz ... -
Assessment on linearity errors in detectors for interferometric radiometers
Torres Torres, Francisco; Duffo Ubeda, Núria; Gonzalez-Haro, Cristina; Vilaseca, R; Sagués, L; Martín-Neira, Manuel (2008)
Conference report
Restricted access - publisher's policyThe performance of the power detectors used to denormalize the digital correlations in interferometric radiometers is degraded due to the non-linear behavior of the diode response. This work presents a comprehensive ... -
Automatic calibration of channels frequency response in interferometric radiometers
Camps Carmona, Adriano José; Torres Torres, Francisco; Bará Temes, Francisco Javier; Corbella Sanahuja, Ignasi; Monzón Soria, Francisco Jose (IEE-INST ELEC ENG, 1999-01-31)
Article
Open AccessThe large field of view required in Earth observation interferometric radiometers does not enable the use of a variable delay to compensate for different transit times, as in radioastronomy. A technique is presented to ... -
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)
Conference report
Open AccessThe 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)
Conference report
Open AccessWhen 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 ... -
Benvinguda - Parlaments
Torres Torres, Francisco; López Álvarez, David; Peña Carrera, Marta; Navarro, Arcadi; Rodellar Benedé, José (2018-04-10)
Audiovisual
Open Access -
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)
Conference report
Open Access