Ara es mostren els items 41-52 de 52

    • SNR and standard deviation of cGNSS-R and iGNSS-R scatterometric measurements 

      Alonso Arroyo, Alberto; Querol Borràs, Jorge; López Martínez, Carlos; Zavorotny, Valery U.; Hyuk, Park; Pascual Biosca, Daniel; Onrubia Ibáñez, Raúl; Camps Carmona, Adriano José (2017-01-19)
      Article
      Accés obert
      This work addresses the accuracy of the Global Navigation Satellite Systems (GNSS)-Reflectometry (GNSS-R) scatterometric measurements considering the presence of both coherent and incoherent scattered components, for both ...
    • SNR degradation in GNSS-R measurements under the effects of radio-frequency interference 

      Querol Borràs, Jorge; Alonso Arroyo, Alberto; Onrubia Ibáñez, Raúl; Pascual Biosca, Daniel; Hyuk, Park; Camps Carmona, Adriano José (2016-08-24)
      Article
      Accés obert
      Radio-frequency interference (RFI) is a serious threat for systems working with low power signals such as those coming from the global navigation satellite systems (GNSS). The spectral separation coefficient (SSC) is the ...
    • Soil moisture mapping using forward scattered GPS L1 signals 

      Alonso Arroyo, Alberto; Forte Veliz, Giuseppe Francesco; Camps Carmona, Adriano José; Hyuk, Park; Pascual Biosca, Daniel; Onrubia Ibáñez, Raúl; Jové Casulleras, Roger (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      This work presents a novel technique for the determination of soil moisture obtaining 2-D Soil Moisture (SM) information with a single instrument. Both the instrument and the retrieval algorithm used, which is based on ...
    • 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
      Accés restringit per política de l'editorial
      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 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 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 ...
    • The microwave interferometric reflectometer. Part I: front-end and beamforming description 

      Onrubia Ibáñez, Raúl; Pascual Biosca, Daniel; Camps Carmona, Adriano José; Alonso Arroyo, Alberto; Hyuk, Park (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The Microwave Interferometric Reflectometer (MIR) is a new airborne reflectometer being developed at Catalonia Polytechnic University (UPC) that uses Global Navigation Satellite Systems (GNSS) to retrieve mainly altitude ...
    • The microwave interferometric reflectometer. Part II: Back-end and processor descriptions 

      Pascual Biosca, Daniel; Onrubia Ibáñez, Raúl; Alonso Arroyo, Alberto; Hyuk, Park; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper describes the Microwave Interferometric Reflectometer (MIR) instrument back-end for GNSS reflectometry (GNSS-R) applications. MIR uses the interferometric (iGNSS-R) and conventional (cGNSS-R) techniques for ...
    • Two dedicated soil noisture experiments using the scatterometric properties of GNSS-reflectometry 

      Alonso Arroyo, Alberto; Torrecilla, Sandra; Querol Borràs, Jorge; Camps Carmona, Adriano José; Pascual Biosca, Daniel; Hyuk, Park; Onrubia Ibáñez, Raúl (2015)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      This work presents two field campaigns performed between December 2014 and June 2015 in order to better understand the behavior of Global Navigation Satellite Systems (GNSS) reflected signals over land. The instruments ...
    • UPCSAT-1, demostrador CubeSat para observación terrestre 

      Jové Casulleras, Roger; Camps Carmona, Adriano José; Vall-Llossera Ferran, Mercedes Magdalena; Bou Balust, Elisenda; Ramos Castro, Juan José; Alarcón Cot, Eduardo José; Alonso Arroyo, Alberto (2013)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      UPCSat-1, es el primer proyecto de la Universitat Politécnica de Catalunya para construir y lanzar un pico- satélite. El objetivo principal de este proyecto es construir, ensamblar, testear y poner en órbita baja ...
    • Water surface monitoring using GNSS-R opportunity signals 

      Alonso Arroyo, Alberto (Universitat Politècnica de Catalunya, 2012-02-28)
      Projecte Final de Màster Oficial
      Accés obert
      [ANGLÈS] This Master Thesis follows the future research lines recommended in Dr. Nereida Rodríguez Álvarez Ph.D Thesis dissertation. It is based on the application of the Interference Pattern Technique (IPT) on dynamic ...
    • Wind speed maping from the ISS using GNSS-R? A simulation study 

      Camps Carmona, Adriano José; Hyuk, Park; Alonso Arroyo, Alberto (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Reflectometry using Global Navigation Satellite System's signals of opportunity (GNSS-R) was originally conceived for mesoscale altimetry, but it can be applied to sea state determination (i.e. wind speed), among many other ...