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Ara es mostren els items 21-38 de 38

    • Implementation of a testbed for GNSS-R payload performance evaluation 

      Pérez Portero, Adrián; Muñoz Martin, Joan Francesc; Querol, Jorge; Hyuk, Park; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2020-05-28)
      Article
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      The functional performance of space-borne instruments must be validated on ground before and after satellite integration. The effects of radio-frequency interference are also becoming more important, even in protected bands ...

    • In-orbit validation of the FMPL-2 dual microwave payload onboard the Fsscat Mission 

      Muñoz Martin, Joan Francesc; Fernandez Capon, Lara Pilar; Pérez Portero, Adrián; Hyuk, Park; Ruiz De Azúa Ortega, Juan Adrián; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2021)
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      The Flexible Microwave Payload -2 is the microwave remote sensing payload of the FSSCat mission. The instrument is the outcome of years of work of the Universitat Politécnica de Catalunya Passive Remote Sensing Laboratory, ...

    • In-orbit validation of the fmpl-2 instrument—the gnss-r and l-band microwave radiometer payload of the fsscat mission 

      Muñoz Martin, Joan Francesc; Fernandez Capon, Lara Pilar; Pérez Portero, Adrián; Ruiz De Azúa Ortega, Juan Adrián; Hyuk, Park; Camps Carmona, Adriano José; Carnicero Domínguez, Bernardo; Pastena, Massimiliano (Multidisciplinary Digital Publishing Institute (MDPI), 2021-01-01)
      Article
      Accés obert
      The Flexible Microwave Payload-2 is the GNSS-R and L-band Microwave Radiometer Payload on board 3Cat-5/A, one of the two 6-unit CubeSats of the FSSCat mission, which were successfully launched on 3 September 2020 on Vega ...

    • Multi-constellation, dual-polarization, and dual-frequency GNSS-R stratospheric balloon experiment over boreal forests 

      Carreño Luengo, Hugo; Amézaga Sarries, Adrià; Bolet, Albert; Vidal Mateu, David; Jané, Jaume; Muñoz Martin, Joan Francesc; Olivé Muñiz, Roger; Camps Carmona, Adriano José (2015)
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      Scientific evaluation of the 3Cat-2 payload (PYCARO reflectometer) has been performed from the BEXUS 19 stratospheric balloon flight with an apogee of ~ 27,000 m over boreal forests and lakes. The payload was configured ...

    • 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)
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      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, ...

    • Proof-of-concept of a federated satellite system between two 6-unit cubeSats for distributed earth observation satellite systems 

      Ruiz De Azúa Ortega, Juan Adrián; Fernandez Capon, Lara Pilar; Muñoz Martin, Joan Francesc; Badia Ballús, Marc; Castellà Rubinat, Ricard; Diez Garcia, Carlos; Aguilella, Andrea; Calveras Augé, Anna M.; Camps Carmona, Adriano José (2019)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      During these years, novel Distributed Satellite Systems (DSS) have addressed the new Earth Observation (EO) requirements (e.g. near-real time access to data, or multi-point observations). One of the DSS proposals is the ...

    • Sea ice concentration and sea ice extent mapping with L-Band microwave radiometry and GNSS-R data from the FFSCat mission using neural networks 

      Llaveria Godoy, David; Muñoz Martin, Joan Francesc; Herbert, Christoph Josef; Pablos Hernández, Miriam; Hyuk, Park; Camps Carmona, Adriano José (Multidisciplinary Digital Publishing Institute (MDPI), 2021-03-17)
      Article
      Accés obert
      CubeSat-based Earth Observation missions have emerged in recent times, achieving scientifically valuable data at a moderate cost. FSSCat is a two 6U CubeSats mission, winner of the ESA S3 challenge and overall winner of ...

    • Sea ice thickness estimation based on regression neural networks using L-band microwave radiometry data from the FSSCat mission 

      Herbert, Christoph Josef; Muñoz Martin, Joan Francesc; Llaveria Godoy, David; Pablos Hernández, Miriam; Camps Carmona, Adriano José (Multidisciplinary Digital Publishing Institute (MDPI), 2021-04-02)
      Article
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      Several methods have been developed to provide polar maps of sea ice thickness (SIT) from L-band brightness temperature (TB) and altimetry data. Current process-based inversion methods to yield SIT fail to address the ...

    • Sea surface salinity and wind speed retrievals using GNSS-R and L-band microwave radiometry data from FMPL-2 onboard the FSSCat mission 

      Muñoz Martin, Joan Francesc; Camps Carmona, Adriano José (Multidisciplinary Digital Publishing Institute (MDPI), 2021-08-13)
      Article
      Accés obert
      The Federated Satellite System mission (FSSCat), winner of the 2017 Copernicus Masters Competition and the first ESA third-party mission based on CubeSats, aimed to provide coarse-resolution soil moisture estimations and ...

    • Snow and ice thickness retrievals using GNSS-R: Preliminary results of the mosaic experiment 

      Muñoz Martin, Joan Francesc; Pérez Portero, Adrián; Camps Carmona, Adriano José; Ribó Vedrilla, Serni; Cardellach Galí, Estel; Stroeve, Julienne; Nandan, Vishnu; Itkin, Polona; Tonboe, Rasmus; Hendricks, Stefan; Huntemann, Marcus; Spreen, Gunnar; Pastena, Massimiliano (Multidisciplinary Digital Publishing Institute (MDPI), 2020-12-02)
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      The FSSCat mission was the 2017 ESA Sentinel Small Satellite (S^3) Challenge winner and the Copernicus Masters competition overall winner. It was successfully launched on 3 September 2020 onboard the VEGA SSMS PoC (VV16). ...

    • Soil moisture estimation synergy using GNSS-R and L-Band microwave radiometry data from FSSCat/FMPL-2 

      Muñoz Martin, Joan Francesc; Llaveria Godoy, David; Herbert, Christoph Josef; Pablos Hernández, Miriam; Hyuk, Park; Camps Carmona, Adriano José (Multidisciplinary Digital Publishing Institute (MDPI), 2021-03-05)
      Article
      Accés obert
      The Federated Satellite System mission (FSSCat) was the winner of the 2017 Copernicus Masters Competition and the first Copernicus third-party mission based on CubeSats. One of FSSCat’s objectives is to provide coarse Soil ...

    • Soil moisture retrieval using the FMPL-2/FSSCat GNSS-R and microwave radiometry data 

      Muñoz Martin, Joan Francesc; Llaveria Godoy, David; Herbert, Christoph Josef; Pablos Hernández, Miriam; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This work presents the first scientific results over land from the Flexible Microwave Payload -2 (FMPL-2), onboard the FSSCat mission. FMPL-2 is composed of an L-band microwave radiometer and a Global Navigation Satellite ...

    • 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)
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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 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 ...

    • 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)
      Text en actes de congrés
      Accés obert
      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 ...

    • 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
      Accés obert
      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 ...