Els objectius del grup són contribuir al progrés científic i tecnològic en l'àmbit de les ciències de l'espai així com promoure la recerca i el desenvolupament. Es potenciarà la col•laboració científica i acadèmica entre els grups i s'articularà la participació dels seus membres a l'Institut d'Estudis Espacials de Catalunya (IEEC).

Els objectius del grup són contribuir al progrés científic i tecnològic en l'àmbit de les ciències de l'espai així com promoure la recerca i el desenvolupament. Es potenciarà la col•laboració científica i acadèmica entre els grups i s'articularà la participació dels seus membres a l'Institut d'Estudis Espacials de Catalunya (IEEC).

Els objectius del grup són contribuir al progrés científic i tecnològic en l'àmbit de les ciències de l'espai així com promoure la recerca i el desenvolupament. Es potenciarà la col•laboració científica i acadèmica entre els grups i s'articularà la participació dels seus membres a l'Institut d'Estudis Espacials de Catalunya (IEEC).

Recent Submissions

  • Monitoring forest above-ground biomass from multifrequency vegetation optical depth: a preliminary study 

    Olivares Cabello, Claudia Lily; Chaparro Danon, David; Vall-Llossera Ferran, Mercedes Magdalena; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2021)
    Conference report
    Open Access
    Vegetation Optical Depth (VOD) is highly sensitive to Above-ground Biomass (AGB), particularly at L-band, as this band is more sensitive to the canopy layer and has greater ca pacity to penetrate the vegetation. However, ...
  • Parameter considerations for the retrieval of surface soil moisture from spaceborne GNSS-R 

    Muñoz Martin, Joan Francesc; Onrubia Ibáñez, Raúl; Pascual Biosca, Daniel; Hyuk, Park; Camps Carmona, Adriano José; Rudiger, Christoph; Walker, Jeffrey; Monerris Belda, Alessandra (Institute of Electrical and Electronics Engineers (IEEE), 2021)
    Conference report
    Open Access
    The Microwave Interferometric Reflectometer (MIR) is an airborne GNSS-R instrument developed by Universitat Politècnica de Catalunya. In 2018, it was flown twice over the agricultural Yanco area, New South Wales, Australia, ...
  • Vegetation canopy height retrieval using L1 and L5 airborne GNSS-R 

    Muñoz Martínez, Francisco José; Pascual Biosca, Daniel; Onrubia Ibáñez, Raúl; Hyuk, Park; Camps Carmona, Adriano José; Rudiger, Christoph; Walker, Jeffrey; Monerris Belda, Alessandra (Institute of Electrical and Electronics Engineers (IEEE), 2021-11-29)
    Article
    Open Access
    Vegetation canopy height (CH) is one of the important remote-sensing parameters related to forests’ structure, and it can be related to the biomass and the carbon stock. Global navigation satellite system-reflectometry ...
  • Untangling the GNSS-R coherent and incoherent components: Experimental evidences over the ocean 

    Muñoz Martin, Joan Francesc; Onrubia Ibáñez, Raul; Pascual Biosca, Daniel; Hyuk, Park; Camps Carmona, Adriano José; Rudiger, Christoph; Walker, Jeffrey; Monerris Belda, Alessandra (2020)
    Conference report
    Open Access
    Global Navigation Satellite Systems Reflected (GNSS-R) signals exhibit an incoherent and a coherent components [1], [2]. Current models assume that one or the other are dominant, and the calibration, and geophysical parameter ...
  • First experimental evidence of wind and swell signatures in L5 GPS and E5A Galileo GNSS-R waveforms 

    Muñoz Martin, Joan Francesc; Onrubia Ibáñez, Raúl; Pascual Biosca, Daniel; Hyuk, Park; Camps Carmona, Adriano José; Rudiger, Christoph; Walker, Jeffrey; Monerris Belda, Alessandra (2020)
    Conference report
    Open Access
    As compared to the using L1C/A signals, L5/E5a Global Navigation Satellite System - Reflectometry (GNSS-R), gives improved resolution over the Earth's surface due to the sharper auto-correlation function. Furthermore, the ...
  • Error propagation in microwave soil moisture and vegetation optical depth retrievals 

    Feldman, Andrew F.; Chaparro Danon, David; Entekhabi, Dara (2021-01-01)
    Article
    Open Access
    Satellite soil moisture and vegetation optical depth [(VOD); related to the total vegetation water mass per unit area] are increasingly being used to study water relations in the soil-plant continuum across the globe. ...
  • Global L-band vegetation volume fraction estimates for modeling vegetation optical depth 

    Chaparro Danon, David; Jagdhuber, Thomas; Piles Guillem, María; Entekhabi, Dara; Jonard, François; Fluhrer, Anke; Feldman, Andrew F.; Vall-Llossera Ferran, Mercedes Magdalena; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2021)
    Conference report
    Restricted access - publisher's policy
    The attenuation of microwave emissions through the canopy is quantified by the vegetation optical depth (VOD), which is related to the amount of water, the biomass and the structure of vegetation. To provide microwave-derived ...
  • Validation of SMOS L3 and L4 soil moisture products in the REMEDHUS (Spain) and CEMADEN (brazil) networks 

    Rossato, Luciana; Vall-Llossera Ferran, Mercedes Magdalena; Camps Carmona, Adriano José; Chaparro Danon, David; Alvalá, Regina Célia dos Santos; Barbosa Alves, Humberto (2020-01-01)
    Article
    Open Access
    This work analyzes the quality of the soil moisture L3 (25 km) and L4 (1 km) products generated at the Barcelona Expert Center (BEC) in two sites located in distinct semi-arid regions, where measurement networks are ...
  • L-band vegetation optical depth estimation using transmitted GNSS signals: Application to GNSS-reflectometry and positioning 

    Camps Carmona, Adriano José; Alonso Arroyo, Alberto; Hyuk, Park; Onrubia Ibáñez, Raúl; Pascual Biosca, Daniel; Querol Borràs, Jorge (Multidisciplinary Digital Publishing Institute (MDPI), 2020-08-01)
    Article
    Open Access
    At L-band (1–2 GHz), and particularly in microwave radiometry (1.413 GHz), vegetation has been traditionally modeled with the τ-ω model. This model has also been used to compensate for vegetation effects in Global Navigation ...
  • On the correlation between GNSS-R reflectivity and L-band microwave radiometry 

    Alonso Arroyo, Alberto; Camps Carmona, Adriano José; Monerris Belda, Sandra; Rudiger, Christoph; Walker, Jeffrey; Onrubia Ibáñez, Raúl; Querol Borràs, Jorge; Hyuk, Park; Pascual Biosca, Daniel (Institute of Electrical and Electronics Engineers (IEEE), 2016-12)
    Article
    Open Access
    This work compares microwave radiometry and global navigation satellite systems-reflectometry (GNSS-R) observations using data gathered from airborne flights conducted for three different soil moisture conditions. Two ...
  • Advanced GNSS-R signals processing with GPUs 

    Cervelló Nogués, Oriol; Pascual Biosca, Daniel; Onrubia Ibáñez, Raúl; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2020-01-01)
    Article
    Open Access
    Global navigation satellite system reflectometry (GNSS-R) is a group of techniques that uses satellite navigation signals as signals of opportunity for remote sensing applications. In GNSS-R, large amounts of data are ...
  • Untangling the incoherent and coherent scattering components in GNSS-R and novel applications 

    Muñoz Martin, Joan Francesc; Onrubia Ibáñez, Raúl; Pascual Biosca, Daniel; Hyuk, Park; Camps Carmona, Adriano José; Rudiger, Christoph; Walker, Jeffrey; Monerris Belda, Alessandra (Multidisciplinary Digital Publishing Institute (MDPI), 2020-04-09)
    Article
    Open Access
    As opposed to monostatic radars where incoherent backscattering dominates, in bistatic radars, such as Global Navigation Satellite Systems Reflectometry (GNSS-R), the forward scattered signals exhibit both an incoherent ...

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