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.
Collections in this community
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Altres [2]
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Articles de revista [82]
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Llibres [1]
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Patents [0]
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Pòsters [0]
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Presentacions [5]
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Reports de recerca [43]
Recent Submissions
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State-of-art products for real time scintillation monitoring and consolidated requirements for the activity
(2022-12-15)
Research report
Restricted access - confidentiality agreement -
Inter-system biases solution strategies in multi-GNSS kinematic precise point positioning
(2023-07)
Article
Open AccessEstimating 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
(IntechOpen, 2023-06-21)
Part of book or chapter of book
Open AccessExisting 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
(Institute of Electrical and Electronics Engineers (IEEE), 2022)
Conference report
Restricted access - publisher's policyRecent 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
(2022)
Conference report
Open Access -
Neural network based model for global Total Electron Content forecasting
(EDP Sciences, 2020-03)
Article
Open AccessWe 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
(2008-01)
Article
Open AccessTide 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
(EDP Sciences, 2019)
Article
Open AccessThe 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
(2008-05-05)
Article
Open AccessEn 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
(2023-03-01)
Article
Restricted access - publisher's policyMonitoring 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
(2022-12)
Article
Open AccessRecently, 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
(John Wiley & sons, 2022-08)
Article
Open AccessSeveral 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 ...