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  • Sensitivity to soil moisture of spaceborne GNSS-R observables 

    Camps Carmona, Adriano José; Vall-Llossera Ferran, Mercedes Magdalena; Hyuk, Park; Portal González, Gerard; Rossato, Luciana (Institute of Electrical and Electronics Engineers (IEEE), 2018)
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    The potential of GNSS-R techniques to estimate land surface parameters such as Soil Moisture (SM) is experimentally studied using 2014-2017 global data from the UK TechDemoSat-1 (TDS-1) mission. The approach is based on ...

  • Antena Bi-banda con conformación de dos haces simultáneos para sistemas GNSS-R 

    Onrubia Ibáñez, Raúl; Pascual Biosca, Daniel; Querol Borràs, Jorge; Hyuk, Park; Camps Carmona, Adriano José (Unión Científica Internacional de Radio (URSI), 2018)
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    Global Navigation Satellite Systems – Reflectometry (GNSS-R) is a relatively new remote sensing technique that benefits from GNSS signals as signals of opportunity as a bistatic radar. These signals can be processed as ...

  • Microwave and optical data fusion for global mapping of soil moisture at high resolution 

    Portal González, Gerard; Vall-Llossera Ferran, Mercedes Magdalena; Piles Guillem, Maria; Camps Carmona, Adriano José; Chaparro Danon, David; Pablos Hernánez, Miriam; Rossato, Luciana; Aabouch, Khalid (Institute of Electrical and Electronics Engineers (IEEE), 2018)
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    After more than 8 years in orbit the Soil Moisture and Ocean Salinity (SMOS) satellite is still in good health and several algorithms for improving its spatial resolution have been proposed and validated in a variety of ...

  • Instrument needs for the Copernicus space infrastructure in the timeframe 2020–2030 

    Lancheros Sepulveda, Estefany Maria; Camps Carmona, Adriano José; Hyuk, Park; Rodríguez, Pedro; Tonetti, Stefania; Matevosyan, H.; Lluch, I.; Sicard, Michaël; Mangin, A. (Institute of Electrical and Electronics Engineers (IEEE), 2018)
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    This work is part of “Operational Network of Individual Observation Nodes” (ONION). ONION is an H2020 project devoted to identify solutions and to satisfy emerging needs of the European Earth Observation (EO) market. In ...

  • Preliminary end- to-end results of the MIR instrument: the microwave interferometric reflectometer 

    Onrubia Ibáñez, Raúl; Pascual, D.; Querol Borràs, Jorge; Hyuk, Park; Camps Carmona, Adriano José; Rudiger, Christoph; Walker, Jeffrey (Institute of Electrical and Electronics Engineers (IEEE), 2018)
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    Global Navigation Satellite Systems - Reflectometry (GNSS-R) has shown his potential for remote sensing. Since new wider band signals are being broadcasted, and new systems are becoming available, a performance comparison ...

  • Spaceborne GNSS-R end-to-end simulator: topography and vegetation effects 

    Hyuk, Park; Camps Carmona, Adriano José; Pascual Biosca, Daniel; Querol Borràs, Jorge; Onrubia Ibáñez, Raúl (Institute of Electrical and Electronics Engineers (IEEE), 2018)
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    As the TDS-1 and CYGNSS spaceborne GNSS-R missions progress, a large number of Delay-Doppler Maps (DDM) is being collected, from the land scattered as well as from the ocean. Based on those data, the feasibility study on ...

  • RFI analysis and mitigation in airborne GNSS-R campaign 

    Querol Borràs, Jorge; Onrubia Ibáñez, Raúl; Pascual Biosca, Daniel; Castellví Esturi, Jordi; Hyuk, Park; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference report
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    Radio-Frequency Interference (RFI) is one of the most concerning topics in Global Navigation Satellite Systems (GNSS) and GNSS - Reflectometry (GNSS-R) because any undesired signal present at the antenna can corrupt the ...

  • Biblos: building blocks for earth observation mission performance simulators 

    Soto, Lucía; Szczepankiewicz, Karolina; Kedzierawski, Robert; Negueruela Ruiz, Cristina de; Camps Carmona, Adriano José; Hyuk, Park; Metselaar, H.; Franco, Raffaella (European Space Agency (ESA), 2017)
    Conference report
    Open Access
    End-to-end mission performance simulators for Earth Observation missions are one of the prominent tools for system design and scientific validation in early mission phases. The European Space Agency (ESA)has promoted efforts ...

  • GNSS-R: a useful tool for sea target detection in near real-time 

    Di Simone, Alessio; Iodice, Antonio; Riccio, Daniele; Camps Carmona, Adriano José; Hyuk, Park (Institute of Electrical and Electronics Engineers (IEEE), 2017)
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    This paper investigates a novel application of Global Navigation Satellite System-Reflectometry (GNSS-R) in the fields of maritime surveillance and safety, and climate change analysis, namely sea target detection in near ...

  • Feasibility of RFI mitigation in synthetic aperture radiometery based on subspace spatial filtering 

    Hyuk, Park; Camps Carmona, Adriano José; González Gambau, Verónica; Vall-Llossera Ferran, Mercedes Magdalena (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference report
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    The impact of Radio Frequency Interference (RFI) is a very serious problem for spaceborne microwave radiometry. Many Soil Moisture Ocean Salinity (SMOS) images show serious contamination by the RFI. SMOS is even more ...

  • L-Band vegetation optical depth for crop phenology monitoring and crop yield assessment 

    Chaparro Danon, David; Piles Guillem, Maria; Vall-Llossera Ferran, Mercedes Magdalena; Camps Carmona, Adriano José; Konings, Alexandra G.; Entekhabi, Dara; Jagdhuber, Thomas (Institute of Electrical and Electronics Engineers (IEEE), 2018)
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    Vegetation Optical Depth (VOD) at L-band is highly sensitive to the water content and above-ground biomass of vegetation. Hence, it has great potential for monitoring crop phenology and for providing crop yield forecasts. ...

  • SMAP multi-temporal vegetation optical depth retrieval as an indicator of crop yield trend and crop composition 

    Chaparro Danon, David; Vall-Llossera Ferran, Mercedes Magdalena; Camps Carmona, Adriano José; Piles de la Fuente, María Pilar; Konings, Alexandra G.; Entekhabi, Dara (Institute of Electrical and Electronics Engineers (IEEE), 2017)
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    Vegetation Optical Depth (VOD) is related to Vegetation Water Content (VWC). This provides new and highly valuable information for ecological and agricultural studies. In this work, VOD from the Soil Moisture Active-Passive ...

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