Exploració per tema "Radiòmetres"

Ara es mostren els items 1-11 de 11

    • 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
      Accés obert
      In 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 ...

    • An enhanced resolution brightness temperature product for future conical scanning microwave radiometers 

      Nunziata, Ferdinando; Alparone, Matteo; Camps Carmona, Adriano José; Hyuk, Park; Zurita Campos, Alberto M.; Estatico, Claudio; Migliaccio, Maurizio (Institute of Electrical and Electronics Engineers (IEEE), 2022)
      Article
      Accés obert
      An enhanced spatial resolution brightness temperature product is proposed for future conical scan microwave radiometers. The technique is developed for Copernicus Imaging Microwave Radiometer (CIMR) measurements that are ...

    • Atmospheric boundary layer height estimation using combined microwave radiometer and lidar data 

      Saeed, Umar; Tiana Alsina, Jordi; Crewell, Susanne; Rocadenbosch Burillo, Francisco (2014)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      The estimation of atmospheric boundary layer height (ABLH) during a full diurnal cycle using ground-based remote sensing instruments is one of the key challenges in atmospheric science. Most of these instruments such as ...

    • Correlation denormalization in interferometric or polarametric radiometers: a unified approach 

      Colliander, Andreas; Torres Torres, Francisco; Corbella Sanahuja, Ignasi (IEEE, 2009-02)
      Article
      Accés obert
      This 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 ...

    • Development and testing of processing software for an airborne soil moisture mapper 

      Jou Barrancos, Marc (Universitat Politècnica de Catalunya, 2018-07-20)
      Projecte Final de Màster Oficial
      Accés restringit per decisió de l'autor
      Realitzat a/amb:   Balam Ingeniería de Sistemas
      Remote sensing is a useful way of obtaining data of a given target without being in physical contact. One of the means of remote sensing is through the use of microwaves. Using passive sensors like radiometers, it is ...

    • Impact of day/night time land surface temperature in soil moisture disaggregation algorithms 

      Pablos Hernández, Miriam; Piles Guillem, Maria; Sánchez, Nilda; Vall-Llossera Ferran, Mercedes Magdalena; Martinez Fernandez, Jose; Camps Carmona, Adriano José (2016-09-15)
      Article
      Accés obert
      Since its launch in 2009, the ESA’s SMOS mission is providing global soil moisture (SM) maps at ~40 km, using the first L-band microwave radiometer on space. Its spatial resolution meets the needs of global applications, ...

    • Influence of ice thickness on SMOS and Aquarius brightness temperature over Antarctica 

      Pablos Hernández, Miriam; Piles Guillem, Maria; Gonzalez Gambau, Verónica; Camps Carmona, Adriano José; Vall-Llossera Ferran, Mercedes Magdalena (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The Dome-C region, in the East Antarctic Plateau, has been used for calibration/validation of satellite microwave radiometers since the 1970's. However, its use as an independent external target has been recently questioned ...

    • Measurement errors with low-cost citizen science radiometers 

      Bardají, R.; Piera Fernández, Jaume (SARTI, 2016)
      Comunicació de congrés
      Accés obert
      The KdUINO is a Do-It-Yourself buoy with low-cost radiometers that measure a parameter related to water transparency, the diffuse attenuation coefficient integrated into all the photosynthetically active radiation. In ...

    • On the design of microwave radiometers with digital beamforming and polarization synthesis for earth observation. 

      Bosch Lluís, Xavier (Universitat Politècnica de Catalunya, 2011-03-30)
      Tesi
      Accés obert
      Actualment, la comunitat científica ja disposa de les primeres mesures radiomètriques a banda L, polarimètriques i multi-angulars fetes de l’espai. Això és gràcies al recent llançament de la missió de la Eurepean Space ...

    • Phase and amplitude calibration of rotating equispaced circular array for geostationary microwave interferometric radiometers: Simulation results and discussion 

      Guo, Xi; Camps Carmona, Adriano José; Hyuk, Park; Liu, Hao; Zhang, Cheng; Wu, Ji (Institute of Electrical and Electronics Engineers (IEEE), 2022)
      Article
      Accés obert
      In the theoretical part of this work, a calibration strategy for both phase and amplitude calibration of rotating equispaced circular array based on redundant space calibration was introduced. It avoids the challenging ...

    • Phase and amplitude calibrations of rotating equispaced circular array for geostationary microwave interferometric radiometers: theory and methods 

      Guo, Xi; Camps Carmona, Adriano José; Hyuk, Park; Liu, Hao; Zhang, Cheng; Wu, Ji (Institute of Electrical and Electronics Engineers (IEEE), 2022)
      Article
      Accés obert
      The calibration strategy for synthetic aperture interferometric radiometers based on noise injection has been successfully demonstrated in the Microwave Imaging Radiometer with Aperture Synthesis (MIRAS) instrument onboard ...