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Ara es mostren els items 435-454 de 492

    • Temperature gradient sensor from pulsed power supply duty cycle in ultra-low-power energy harvesting system 

      Jové Casulleras, Roger; Ramos Castro, Juan José; Corimanya, H; Camps Carmona, Adriano José; Alarcón Cot, Eduardo José; Amézaga Sarries, Adrià; Bou Balust, Elisenda (Institution of Electrical Engineers, 2014-05-22)
      Article
      Accés restringit per política de l'editorial
      Directly interfacing sensors that link sensors to micro-controllers without a signal conditioning circuit or an analogue-to-digital converter on the one side and energy harvesting systems on the other side are two key ...

    • The 2021 la Palma volcanic eruption and its impact on ionospheric scintillation as measured from GNSS reference stations, GNSS-R and GNSS-RO 

      Molina Ordóñez, Carlos; Boudriki Semlali, Badr Eddine; González Casado, Guillermo; Hyuk, Park; Camps Carmona, Adriano José (European Geosciences Union (EGU), 2023-11-29)
      Article
      Accés obert
      Ionospheric disturbances induced by seismic activity have been studied in recent years by many authors, showing an impact both before and after the occurrence of earthquakes. In this study, the ionospheric scintillation ...

    • The 2021 volcanic eruption in La Palma Island and its impact on ionospheric scintillation as measured from GNSS reference stations, GNSS-R, and GNSS-RO 

      Molina Ordóñez, Carlos; Boudriki Semlali, Badr Eddine; Hyuk, Park; Camps Carmona, Adriano José (2022-11-11)
      Report de recerca
      Accés obert
      Ionospheric disturbances induced by seismic activity have been studied in the last years by many authors, showing an impact both before and after the occurrence of earthquakes. In this study, the ionospheric scintillation ...

    • The 3Cat-2 Project: GNSS-R In-Orbit Demonstrator for Earth Observation 

      Carreño Luengo, Hugo; Camps Carmona, Adriano José; Jové Casulleras, Roger; Alonso Arroyo, Alberto; Olivé Muñiz, Roger; Amézaga Sarries, Adrià; Vidal Mateu, David; Muñoz Martin, Joan Francesc (European Spatial Agengy (ESA), 2014)
      Text en actes de congrés
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      Universitat Politècnica de Catalunya (UPC) – BarcelonaTech Remote Sensing Laboratory focus on the development of breakthrough concepts. The 3Cat-2 mission is on the synergy of GNSS reflectometry and the CubeSat concept. ...

    • The correlation of visibility errors and its impact on the radiometric resolution of an aperture synthesis radiometer 

      Bará Temes, Francisco Javier; Camps Carmona, Adriano José; Torres Torres, Francisco; Corbella Sanahuja, Ignasi (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2000-09-30)
      Article
      Accés obert
      The correlation between the visibility samples' noise of an aperture synthesis radiometer are required for the computation of the recovered temperature noise of a given pixel and of the improvement introduced by baseline ...

    • The correlation of visibility noise and its impact on the radiometric resolution of an aperture synthesis radiometer 

      Bará Temes, Francisco Javier; Camps Carmona, Adriano José; Torres Torres, Francisco; Corbella Sanahuja, Ignasi (Institute of Electrical and Electronics Engineers (IEEE), 2000-09)
      Article
      Accés obert
      The correlation between the visibility samples' noise of an aperture synthesis radiometer are required for the computation of the recovered temperature noise of a given pixel and of the improvement introduced by baseline ...

    • The Determination of Surface Salinity with the European SMOS Space Mission 

      Font, Jordi; Lagerloef, Gary S. E.; Le Vine, David M.; Camps Carmona, Adriano José; Zanifé, Ouan-Zan (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2004-10-31)
      Article
      Accés obert
      The European Space Agency Soil Moisture and Ocean Salinity (SMOS) mission aims at obtaining global maps of soil moisture and sea surface salinity from space for large-scale and climatic studies. It uses an L-band ...

    • The dual polarization GNSS-R interference pattern technique 

      Alonso Arroyo, Alberto; Camps Carmona, Adriano José; Monerris Belda, Sandra; Ruudiger, C.; Walker, Jeffrey; Forte Veliz, Giuseppe Francesco; Pascual Biosca, Daniel; Hyuk, Park; Onrubia Ibáñez, Raúl (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Since 2003 several field experiments using Global Navigation Satellite Systems (GNSS)-Reflectometry (GNSS-R) have demonstrated the feasibility of retrieving Soil Moisture (SM) from GNSS-R observations. Different techniques ...

    • The Emissivity Of Foam-Covered Water Surface At L-Band: Theoretical Modeling And Experimental Results From The FROG 2003 Field Experiment 

      Camps Carmona, Adriano José; Vall-Llossera Ferran, Mercedes Magdalena; Villarino Villarino, Ramón; Reul, Nicolas; Chapron, Bertrand; Corbella Sanahuja, Ignasi; Duffo Ubeda, Núria; Torres Torres, Francisco; Miranda Mendoza, Jorge José; Sabia, Roberto; Monerris Belda, Alessandra; Rodríguez Sánchez, Rubén (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2005-05-31)
      Article
      Accés obert
      Sea surface salinity can be measured by microwave radiometry at L-band (1400-1427 MHz). This frequency is a compromise between sensitivity to the salinity, small atmospheric perturbation, and reasonable pixel resolution. ...

    • The emissivity of foam-covered water surface at L-band: theoretical modeling and experimental results from the FROG 2003 field experiment 

      Rodríguez, R; Monerris Belda, Alessandra; Sabia, Roberto; Miranda Mendoza, Jorge José; Camps Carmona, Adriano José; Vall-Llossera Ferran, Mercedes Magdalena; Villarino Villarino, Ramón; Reul, N; Chapron, B; Corbella Sanahuja, Ignasi; Duffo Ubeda, Núria; Torres Torres, Francisco (IEEE Press. Institute of Electrical and Electronics Engineers, 2005-05)
      Article
      Accés obert
      Sea surface salinity can be measured by microwave radiometry at L-band (1400–1427 MHz). This frequency is a compromise between sensitivity to the salinity, small atmospheric perturbation, and reasonable pixel resolution. ...

    • The flexible microwave payload -2: Architecture and testing of a combined GNSS-R and L-Band radiometer with RFI mitigation payload for cubesat-based Earth observation missions 

      Muñoz Martin, Joan Francesc; Fernandez Capon, Lara Pilar; Ruiz De Azúa Ortega, Juan Adrián; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      The FSSCat mission is a two nano-satellite Earth Observation mission based on 6-unit CubeSats. This paper is focused on the description of one of the remote sensing payloads: the Flexible Microwave Payload 2 (FMPL-2), on ...

    • The flexible microwave payload -2: design, implementation, and optimization of a GNSS-R and radiometry processor for cubesat-based earth observation missions 

      Muñoz Martin, Joan Francesc; Fernandez Capon, Lara Pilar; Ruiz De Azúa Ortega, Juan Adrián; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The Flexible Microwave Payload 2 (FMPL-2) is a Remote Sensing payload carried on board 3 Cat-5/A, one of the two 6-unit CubeSats of the FSSCat mission. FMPL-2 is a payload based on a Software Defined Radio (SDR), integrating ...

    • The flexible microwave payload-2: A SDR-based GNSS-reflectometer and L-Band radiometer for CubeSats 

      Muñoz Martin, Joan Francesc; Fernandez Capon, Lara Pilar; Ruiz De Azúa Ortega, Juan Adrián; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2020-03-23)
      Article
      Accés obert
      This article presents the FMPL-2 on board the FSSCat mission, the 2017 ESA Small Sentinel Satellite Challenge and overall Copernicus Masters Competition winner. FMPL-2 is a passive microwave instrument based on a ...

    • The global navigation satellite systems reflectometry (GNSS-R) microwave interferometric reflectometer: hardware, calibration, and validation experiments 

      Onrubia Ibáñez, Raúl; Pascual Biosca, Daniel; Querol Borràs, Jorge; Hyuk, Park; Camps Carmona, Adriano José (Multidisciplinary Digital Publishing Institute (MDPI), 2019-02-27)
      Article
      Accés obert
      This manuscript describes the Microwave Interferometric Reflectometer (MIR) instrument, a multi-beam dual-band GNSS-Reflectometer with beam-steering capabilities built to assess the performance of a PAssive Reflectrometry ...

    • The GRSS standard for GNSS-reflectometry 

      Carreño Luengo, Hugo; Camps Carmona, Adriano José; Flouri, Nicolas; Martín Neira, Manuel; Ruf, Chris; Wang, Tianlin; Khalsa, Siri Jodha; Clarizia, Maria Paola; Reynolds, Jennifer; Johnson, Joel (2020)
      Text en actes de congrés
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      In February 2019 a Project Authorization Request was approved by the Institute of Electrical and Electronics Engineers (IEEE) Standards Association with the title “Standard for Global Navigation Satellite System Reflectometry ...

    • The IEEE Geoscience and Remote Sensing Society "Open PocketQube Kit": An affordable open source approach to Earth observation missions 

      Podaru, Stefan; Gràcia i Solà, Guillem; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2023-12-01)
      Article
      Accés obert
      CubeSats are now serving a wide range of applications beyond their original educational intent. Private companies are deploying large constellations for Earth observation and machine–to–machine communications. Their growing ...

    • The IEEE-SA Working Group on Spaceborne GNSS-R: Scene study 

      Carreño Luengo, Hugo; Camps Carmona, Adriano José; Ruf, Chris; Floury, Nicolas; Martín Neira, Manuel; Wang, Tianlin; Khalsa, Siri Jodha; Clarizia, Maria Paola; Reynolds, Jennifer; Johnson, Joel; O’Brien, Andrew; Galdi, Carmela; di Bisceglie, Maurizio; Dielacher, Andreas (Institute of Electrical and Electronics Engineers (IEEE), 2021-06-16)
      Article
      Accés obert
      The Institute of Electrical and Electronics Engineers (IEEE) Geoscience and Remote Sensing Society (GRSS) created the GRSS “Standards for Earth Observation Technical Committee” to advance the usability of remote sensing ...

    • The impact of antenna pattern frequency dependence in aperture synthesis microwave radiometers 

      Camps Carmona, Adriano José; Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Duffo Ubeda, Núria; Vall-Llossera Ferran, Mercedes Magdalena; Martín Neira, Manuel (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2005-10-31)
      Article
      Accés obert

    • The impact of Antenna Pattern Frequency Dependence in Aperture Synthesis Microwave Radiometers 

      Camps Carmona, Adriano José; Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Duffo Ubeda, Núria; Vall-Llossera Ferran, Mercedes Magdalena; Martín Neira, Manuel (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2005-10-31)
      Article
      Accés obert
      The effect of the frequency dependence of the antenna voltage patterns within the bandwidth of an aperture synthesis interferometric radiometer is studied and quantified using actual antenna voltage patterns measured at ...

    • The light airborne reflectometer for GNSS-R observations (LARGO) instrument: initial results from airborne and Rover field campaigns 

      Alonso Arroyo, Alberto; Camps Carmona, Adriano José; Monerris Belda, Sandra; Rudiger, Christoph; Walker, Jeffrey; Forte Veliz, Giuseppe Francesco; Pascual Biosca, Daniel; Hyuk, Park; Onrubia Ibáñez, Raúl (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Global Navigation Satellite Systems (GNSS)-Reflectometry (GNSS-R) has proved to be a useful technique for the estimation of Soil Moisture (SM). In the past 10 years, different techniques such as the Interference Pattern ...