gAGE - grup d'Astronomia i GEomàtica

 

Recerca i transferència de tecnologia en l’àmbit de la navegació molt precisa GNSS (GPS, GLONASS, GALILEO, SBAS) i de l’observació de la Terra (sondeig atmosfèric: ionosfera i troposfera). Modelització de processos i sistemes en l’àmbit de les ciències de la Terra, incloent–hi la biotecnologia.

Pàgina web del grup de recerca

Recent Submissions

  • State-of-art products for real time scintillation monitoring and consolidated requirements for the activity 

    González Casado, Guillermo; Juan Zornoza, José Miguel; Yin, Yu; Timote Bejarano, Cristhian Camilo; Sanz Subirana, Jaume; Rovira Garcia, Adrià (2022-12-15)
    Research report
    Restricted access - confidentiality agreement

  • Inter-system biases solution strategies in multi-GNSS kinematic precise point positioning 

    Li, Mowen; Rovira Garcia, Adrià; Nie, Wenfeng; Xu, Tianhe; Xu, Guochang (2023-07)
    Article
    Open Access
    Estimating inter-system biases (ISBs) is important in multi-constellation Global Navigation Satellite System (GNSS) processing. The present study aims to evaluate and screen out an optimal estimation strategy of ISB for ...

  • Ionospheric scintillation models: An inter-comparison study using GNSS data 

    Camps Carmona, Adriano José; Molina Ordóñez, Carlos; González Casado, Guillermo; Juan Zornoza, José Miguel; Lemorton, Joël; Fabbro, Vincent; Mainvis, Aymeric; Barbosa, José; Orús Pérez, Raul (IntechOpen, 2023-06-21)
    Part of book or chapter of book
    Open Access
    Existing climatological ionosphere models, for example, GISM, SCIONAV, WBMOD, and STIPEE, have known limitations that prevent their wide use. In the framework of ESA study “Radio Climatology Models of the Ionosphere: Status ...

  • Ionospheric scintillation anomalies associated with the 2021 La Palma volcanic eruption detected with Gnss-R and Gnss-Ro observations 

    Molina Ordóñez, Carlos; Boudriki Semlali, Badr Eddine; González Casado, Guillermo; Hyuk, Park; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2022)
    Conference report
    Restricted access - publisher's policy
    Recent studies have shown possible signatures or precursors of seismic activity in the ionosphere. Our group is focusing on ionospheric scintillation associated with seismic activity. By the time this study was conducted, ...

  • Feasibility of snapshot GNSS carrier phase amendment based on LAMBDA ratio tests 

    Liu, Xiao; Rovira Garcia, Adrià; Sanz Subirana, Jaume; Closas Gómez, Pau; Gusi Amigó, Adriá (2022)
    Conference report
    Open Access

  • Neural network based model for global Total Electron Content forecasting 

    Cesaroni, Claudio; Spogli, Luca; Aragón Ángel, María Ángeles; Fiocca, Michel; Dear, Varuliator; De Franceschi, Giorgiana; Romano, Vincenzo (EDP Sciences, 2020-03)
    Article
    Open Access
    We introduce a novel empirical model to forecast, 24 h in advance, the Total Electron Content (TEC) at global scale. The technique leverages on the Global Ionospheric Map (GIM), provided by the International GNSS Service ...

  • Comparison of GPS analysis strategies for high-accuracy vertical land motion 

    Kierulf, H P; Plag, H P; Bingley, R M; Teferle, N; Demir, C; Cingoz, A; Yildiz, H; Zdunek, R; Jaworski, L; Martínez Benjamín, Juan José; Orús Pérez, Raul; Aragón Ángel, María Ángeles (2008-01)
    Article
    Open Access
    Tide gauges measure sea level changes relative to land. To separate absolute changes in sea level from vertical land movements tide gauges are often co-located with Continuous GPS (CGPS). In order to achieve an accuracy ...

  • The ionosphere prediction service prototype for GNSS users 

    Vadakke Veettil, Sreeja; Cesaroni, Claudio; Aquino, Marcio; De Franceschi, Giorgiana; Berrili, Francesco; Rodriguez, Filippo; Spogli, Luca; Del Moro, Dario; Cristaldi, Alice; Romano, Vincenzo; Ronchini, Roberto; Di Rollo, Stefano; Guyader, Eric; Aragón Ángel, María Ángeles (EDP Sciences, 2019)
    Article
    Open Access
    The effect of the Earth’s ionosphere represents the single largest contribution to the Global Navigation Satellite System (GNSS) error budget and abnormal ionospheric conditions can impose serious degradation on GNSS system ...

  • WIDE AREA Real Time Kinematics (WARTK): nuevas posibilidades de posicionamiento y navegación GNSS precisa a escala continental 

    Aragón Ángel, María Ángeles; Hernández Pajares, Manuel; Juan Zornoza, José Miguel; Sanz Subirana, Jaume (2008-05-05)
    Article
    Open Access
    En este artículo se presenta la nueva técnica Wide Area Real Time Kinematics (WARTK) que permite la extensión de técnicas previas de navegación precisa por satélite, como por ejemplo el Real Time Kinematics (RTK), más allá ...

  • Enhanced neural network model for regional ionospheric modeling and evaluation under different solar-geomagnetic conditions 

    Dong, Yanfeng; Gao, Chengfa; Long, Fengyang; Nie, Wenfeng; Juan Zornoza, José Miguel; Rovira Garcia, Adrià; Zhang, Ruicheng (2023-03-01)
    Article
    Restricted access - publisher's policy
    Monitoring spatiotemporal variations of ionospheric vertical total electron content (VTEC) is crucial for space weather and satellite positioning. In the present study, an enhanced neural network (ENN) model is proposed ...

  • A Method to determine secondary codes and carrier phases of short snapshot signals 

    Liu, Xiao; Closas Gómez, Pau; Gusi Amigó, Adrià; Rovira Garcia, Adrià; Sanz Subirana, Jaume (2022-12)
    Article
    Open Access
    Recently, the Snapshot Real-Time Kinematic (SRTK) technique was demonstrated, which aims at achieving high accuracy navigation solutions with a very short signal collection. The main challenge in implementing SRTK is the ...

  • On the global kinematic positioning variations during the September 2017 solar flare events 

    Nie, Wenfeng; Rovira Garcia, Adrià; Wang, Yong; Zheng, Dunyong; Yan, Lingfei; Xu, Tianhe (John Wiley & sons, 2022-08)
    Article
    Open Access
    Several X-class solar flares (SFs) with different intensities and locations on the solar disk occurred in September 2017. Among them, the X9.3 SF on 6 September 2017 was the most intensive SF in the 24th solar cycle. In ...

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