Ara es mostren els items 346-365 de 482

    • Radio-frequency interference location, detection and classification using deep neural networks 

      Pérez Portero, Adrián; Querol Borràs, Jorge; Hyuk, Park; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2020)
      Text en actes de congrés
      Accés obert
      Global Navigation Satellite System (GNSS) signals are used in Earth Observation for Radio Occultation and Reflectometry. The increasing effects of Radio-Frequency Interferences (RFI) on the performance of these receivers ...
    • Radiometric resolution of motion-induced synthetic aperture radiometer 

      Hyuk, Park; Camps Carmona, Adriano José; Choi, Min Gyu; Kim, Yong-Hoon (2011-07)
      Article
      Accés restringit per política de l'editorial
      The radiometric resolution of a motion-induced synthetic aperture radiometer (MISAR) is analytically obtained from the standard deviation of a baseline response, an observation scenario, and the imaging method of the MISAR. ...
    • Radiometric sensitivity computation in aperture synthesis interferometric radiometry 

      Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Bará Temes, Francisco Javier; Torres Torres, Francisco (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1998-03-01)
      Article
      Accés obert
      This paper is concerned with the radiometric sensitivity computation of an aperture synthesis interferometric radiometer devoted to Earth observation. The impact of system parameters and the use of simultaneous redundant ...
    • Radiometric Sensitivity Computation in Aperture Synthesis Interferometric Radiometry 

      Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Bará Temes, Francisco Javier; Torres Torres, Francisco (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1998-03-31)
      Article
      Accés obert
      This paper is concerned with the radiometric sensitivity computation of an aperture synthesis interferometric radiometer devoted to Earth observation. The impact of system parameters and the use of simultaneous redundant ...
    • Radiometric sensitivity computation in aperture synthesis interferometric radiometry 

      Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Bará Temes, Francisco Javier; Torres Torres, Francisco (Institute of Electrical and Electronics Engineers (IEEE), 1998-03)
      Article
      Accés obert
      This paper is concerned with the radiometric sensitivity computation of an aperture synthesis interferometric radiometer devoted to Earth observation. The impact of system parameters and the use of simultaneous redundant ...
    • Ranking methodology for sequential band selection combining data dispersion and spectral band correlation 

      Llaveria Godoy, David; Camps Carmona, Adriano José; Hyuk, Park; Narayan, Ram (Institute of Electrical and Electronics Engineers (IEEE), 2022)
      Text en actes de congrés
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      Today hyperspectral imagers are capable to capture hundreds of spectral bands simultaneously, while they are getting smaller, fitting in CubeSats. The huge amount of information provided by these sensors is used for numerous ...
    • Real-time RFI detection and mitigation system for microwave radiometers 

      Forte Veliz, Giuseppe Francesco; Querol Borràs, Jorge; Camps Carmona, Adriano José; Vall-Llossera Ferran, Mercedes Magdalena (Institute of Electrical and Electronics Engineers (IEEE), 2013-10)
      Article
      Accés restringit per política de l'editorial
      Microwave radiometers are very sensitive passive sensors that measure the power of the thermal noise within a determined bandwidth. Therefore, any other signal present in the band modifies the value of the measured power, ...
    • Receiver specifications of the MIRAS demonstrator 

      Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Camps Carmona, Adriano José; Bará Temes, Francisco Javier; Duffo Ubeda, Núria; Vall-Llossera Ferran, Mercedes Magdalena; Borges, A. (SPIE The International Society for Optical Engineering, 2000)
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      Improved weather forecast and climate monitoring rely on a better quantification of soil moisture (SM) and sea surface salinity (SSS). The most accurate way to measure them from remote sensors is by using radiometers at L ...
    • Recent advances in land monitoring using GNSS-R techniques 

      Camps Carmona, Adriano José; Forte Veliz, Giuseppe Francesco; Ramos, I.; Alonso Arroyo, Alberto; Martinez, Philippe; Crespo, Luis; Alcayde Egea, Antonio (2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Soil moisture and land surface’s temperature are proxys of forest fires risk. In the frame of the DANTE project, ADTelecom (Barcelona, Spain) is working in the design of an instrument: 1) to estimate the risk of forest ...
    • Redundant space calibration of hexagonal and Y-shaped beamforming radars and interferometric radiometers 

      Camps Carmona, Adriano José; Torres Torres, Francisco; López Dekker, Francisco J.; Frasier, S. J. (TAYLOR & FRANCIS LTD, 2003-12-31)
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      Accés obert
    • Reliability analysis in aperture synthesis interferometric radiometers: application to L-Band microwave imaging radiometer with aperture synthesis instruments 

      Vall-Llossera Ferran, Mercedes Magdalena; Duffo Ubeda, Núria; Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Bará Temes, Francisco Javier (AMER GEOPHYSICAL UNION, 2001-03-31)
      Article
      Accés obert
      The Microwave Imaging Radiometer with Aperture Synthesis (MIRAS) instrument will be the first radiometer using aperture synthesis techniques for Earth observation. It will be boarded in the Soil Moisture and Ocean Salinity ...
    • Remote sensing of hydrometeors by means of interfermotric radiometry: theory and experimental results 

      Bará Temes, Francisco Javier; Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Camps Carmona, Adriano José; Martín Neira, Manuel; Nesti, G; Olhmer, E (2000-05)
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      Accés restringit per política de l'editorial
      Spaceborne and ground-based radiometric measurements at microwave and millimeterwave frequencies have proved able to monitor hydrometeors, but at present the angular resolution of those systems is limited by the radiometer's ...
    • Remote sensing of precipitation using reflected GNSS signals: Response analysis of polarimetric observations 

      Asgarimehr, Milad; Hoseini, Mostafa; Semmling, Maximilian; Ramatschi, Markus; Camps Carmona, Adriano José; Nahavandchi, Hossein; Haas, Rüdiger; Wickert, Jens (Institute of Electrical and Electronics Engineers (IEEE), 2022)
      Article
      Accés obert
      For the first time, rain effects on the polarimetric observations of the global navigation satellite system reflectometry (GNSS-R) are investigated. The physical feasibility of tracking the modifications in the surface ...
    • Remote Sensing Spring School in Argentina: SAR for environmental and production monitoring [Education] 

      Ferral, Anabella; Scavuzzo, Carlos M.; Solorza, Romina; Márquez, Jorge; Salvia, Mercedes; Gómez Deniz, Luis; Notarnicola, Claudia; Cigna, Francesca; López Martínez, Carlos; Bhattacharya, Avik; Li, Xiaofeng; Camps Carmona, Adriano José; Frery, Alejandro C. (Institute of Electrical and Electronics Engineers (IEEE), 2019-09-23)
      Article
      Accés obert
      In this column, we present a summary of the Third Remote Sensing Spring School at the Teófilo Tabanera Space Center, Córdoba, Argentina, 10–21 September 2018, to support the launch of the Satélite Argentino de Observación ...
    • Retracking considerations in spaceborne GNSS-R altimetry 

      Hyuk, Park; Camps Carmona, Adriano José; Valencia Domènech, Enric; Rodríguez Álvarez, Nereida; Bosch Lluís, Xavier; Ramos Pérez, Isaac; Carrero Luengo, Hugo (2012-10)
      Article
      Accés restringit per política de l'editorial
      The European Space Agency Passive Reflectometry and Interferometry System In-orbit Demonstrator (IoD) aims to perform mesoscale altimetric observations by measuring the Global Navigation Satellite System (GNSS) opportunity ...
    • Retrieval of significant wave height and mean sea surface level using the GNSS-R interference pattern technique: results from a three-month field campaign 

      Alonso Arroyo, Alberto; Camps Carmona, Adriano José; Hyuk, Park; Pascual Biosca, Daniel; Onrubia Ibáñez, Raúl; Martín Alemany, Francisco (Institute of Electrical and Electronics Engineers (IEEE), 2015-06-01)
      Article
      Accés obert
      Since 1993, when the European Space Agency (ESA) proposed the use of Global Navigation Satellite Systems reflected signals for sea mesoscale altimetry, a wide range of applications have appeared. This paper focuses on the ...
    • Retrieving forest vegetation moisture content from a multi-sensor approach in the Western United States 

      Chaparro Danon, David; Jagdhuber, Thomas; Piles Guillem, María; Flührer, Anke; Jonard, François; Vall-llossera, M.; Camps Carmona, Adriano José; López-Martínez, Carlos; Feldman, Andrew F.; Entekhabi, Dara (2022-06-21)
      Report de recerca
      Accés restringit per política de l'editorial
    • Retrieving Sea Surface Salinity With Multi-Angular L-band Brightness Temperatures: Improvement By Spatio-Temporal Averaging. 

      Camps Carmona, Adriano José; Vall-Llossera Ferran, Mercedes Magdalena; Duffo Ubeda, Núria; Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Batres Gonzalez, Luis (AMER GEOPHYSICAL UNION, 2005-03-31)
      Article
      Accés obert
      The Soil Moisture and Ocean Salinity (SMOS) mission was selected in May 1999 by the European Space Agency to provide global and frequent soil moisture and sea surface salinity maps. SMOS' single payload is Microwave Imaging ...
    • Review of GNSS-R instruments and tools developed at the Universitat Politecnica de Catalunya-Barcelona Tech 

      Camps Carmona, Adriano José; Marchán Hernández, Juan Fernando; Bosch Lluís, Xavier; Rodríguez Álvarez, Nereida; Ramos Pérez, Isaac; Valencia Domènech, Enric; Tarongí Bauzá, José Miguel; Hyuk, Park; Carreño Luengo, Hugo; Alonso Arroyo, Alberto; Pascual Biosca, Daniel; Onrubia Ibáñez, Raúl; Forte Veliz, Giuseppe Francesco; Querol Borràs, Jorge (2014)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      Reflectometry using Global Navigation Satellite System's signals of opportunity (GNSS-R) was originally conceived in the early 90s for mesoscale altimetry, and since then, many studies have shown its applicability to other ...
    • RF interference analisys in aperture synthesis interferometric radiometers: Application to L-band MIRAS instrument 

      Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Bará Temes, Francisco Javier; Capdevila Vives, Joan (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2000-03-31)
      Article
      Accés obert
      Current spaceborne radiometers do not achieve the required spatial resolution demanded by the scientific community due to antenna-size technological limitations. In recent years, several space agencies have been studying ...