Now showing items 1-11 of 11

    • Consolidating the precision of interferometric GNSS-R ocean altimetry using airborne experimental data 

      Cardellach, Estel; Rius, Antonio; Martín Neira, Manuel; Fabra Cervellera, Fran; Nogués Correig, O.; Ribó Vedrilla, Serni; Kainulainen, Juha; Camps Carmona, Adriano José; D'Addio, Salvatore (Institute of Electrical and Electronics Engineers (IEEE), 2014-08)
      Article
      Restricted access - publisher's policy
      This paper revises the precision of altimetric measurements made with signals of the Global Navigation Satellite Systems (GNSS) reflected (GNSS-R) off the sea surface. In particular, we investigate the performance of two ...
    • Feasibility of GNSS-R ice sheet altimetry in Greenland using TDS-1 

      Rius, Antonio; Cardellach, Estel; Fabra Cervellera, Fran; Li, Weiqiang; Ribó Vedrilla, Serni; Hernández Pajares, Manuel (2017-07-19)
      Article
      Open Access
      Radar altimetry provides valuable measurements to characterize the state and the evolution of the ice sheet cover of Antartica and Greenland. Global Navigation Satellite System Reflectometry (GNSS-R) has the potential to ...
    • GEROS-ISS: GNSS REflectometry, radio occultation, and scatterometry onboard the International Space Station 

      Wickert, Jens; Cardellach, Estel; Martín-Neira, Manuel; Bandeiras, J.; Bertino, Laurent; Baltazar Andersen, Ole; Camps Carmona, Adriano José; Catarino, Nuno; Chapron, Bertrand; Fabra Cervellera, Fran; Floury, Nicolas; Foti, Giuseppe; Gommenginger, Christine; Hatton, Jason; Høeg, Peter; Jaggi, A.; Lee, T.; Li, Z.; Hyuk, Park; Pierdicca, Nazzareno; Ressler, Gerhard; Rius, Antonio; Font-Rosselló, Josep; Saynisch, Jan; Soulat, François; Shum, C. K.; Semmling, Maximilian; Sousa, Anna; Xie, Jiping; Zuffada, Cinzia (2016-10-01)
      Article
      Open Access
      GEROS-ISS stands for GNSS REflectometry, radio occultation, and scatterometry onboard the International Space Station (ISS). It is a scientific experiment, successfully proposed to the European Space Agency in 2011. The ...
    • GNSS-R as a source of opportunity for remote sensing of the cryosphere 

      Fabra Cervellera, Fran (Universitat Politècnica de Catalunya, 2013-05-13)
      Doctoral thesis
      Open Access
      This work evaluates the potential use of signals from the Global Navigation Satellite Systems (GNSS) that scatter off the Earth surface for the retrieval of geophysical information from the cryosphere. For this purpose, ...
    • GNSS-R derived centimetric sea topography: an airborne experiment demonstration 

      Carreño Luengo, Hugo; Hyuk, Park; Camps Carmona, Adriano José; Fabra Cervellera, Fran; Rius Jordán, Antonio (2013-06)
      Article
      Restricted access - publisher's policy
      The results of two airborne experiments performed to test the precision and the relative accuracy of the conventional Global Navigation Satellite Systems Reflectometry (GNSS-R) technique employing only the C/A code are ...
    • Impact of the elevation angle in the coherence time as a function of the sea wave height 

      Martín Alemany, Francisco; Camps Carmona, Adriano José; Martín-Neira, Manuel; d'Addio, Salvatore; Fabra Cervellera, Fran; Rius Jordán, Antonio; Hyuk, Park (2015)
      Conference lecture
      Restricted access - publisher's policy
      For a given geometry, the coherence time of a GNSS-R waveform can be initially related to the significant wave height.However, when the coherence time is analyzed, several issues shall be considered, such as the geometry ...
    • PARIS interferometric technique proof of concept: sea surface altimetry measurements 

      Rius, A.; Fabra Cervellera, Fran; Ribó Vedrilla, Serni; Arco Fernandez, Juan Carlos; Oliveras, S.; Cardellach, Estel; Camps Carmona, Adriano José; Nogués Correig, O.; Kainulainen, J.; Rohue, E.; Martín Neira, Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2012)
      Conference report
      Restricted access - publisher's policy
      We report preliminary results of an aircraft experiment aimed to proof the PARIS Interferometric Technique. The experiment was performed in the Gulf of Finland during a two hours flight.We installed a PARIS Interferometric ...
    • Sea-Ice remote sensing with GNSS reflections 

      Cardellach, Estel; Belmonte Rivas, María; Fabra Cervellera, Fran; Nogués Correig, Oleguer; Oliveras, Santiago; Ribó Vedrilla, Serni (SARTI (Technological Development Centre of Remote Acquisition and Data processing Systems), 2010-03-10)
      Article
      Open Access
    • Significant wave height retrieval based on the effective number of incoherent averages 

      Martín Alemany, Francisco; Camps Carmona, Adriano José; Martín-Neira, Manuel; d'Addio, Salvatore; Fabra Cervellera, Fran; Rius Jordán, Antonio; Hyuk, Park (2015)
      Conference lecture
      Restricted access - publisher's policy
      The effectiveness of incoherent averaging depends on the level of correlation between consecutive waveforms, which can vary with the geometry and with the sea state conditions. In addition it is also dependent on the ...
    • Submeter ocean altimetry with GPS L1 C/A signal 

      Carreño Luengo, Hugo; Hyuk, Park; Camps Carmona, Adriano José; Fabra Cervellera, Fran; Rius, Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2012)
      Conference report
      Restricted access - publisher's policy
      The ultimate accuracy and precision of conventional1 and interferometric2 Global Positioning Satellite System Rerflectometry (GNSS-R) techniques for mesoscale ocean altimetry are still a matter of debate in the scientific ...
    • Typhoon observations using the interferometric GNSS-R technique 

      Martín Alemany, Francisco; Camps Carmona, Adriano José; Hyuk, Park; Fabra Cervellera, Fran; Rius Jordán, Antonio; Martín Neira, Manuel; d'Addio, Salvatore; Li, Weiqiang; Yang, Dongkai (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Conference report
      Restricted access - publisher's policy
      Typhoon motoring using Global Navigation Satellite System (GNSS) signals is a new application of the GNSS-R technique, with increasing interest in the last years. Examples of that can be the CYGNSS (Cyclone Global Navigation ...