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Confirming geomagnetic Sfe by means of a solar flare detector based on GNSS
(2019-11-28)
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Article.
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Solar Flares (SF) refer to sudden increases of electromagnetic radiation from the Sun lasting from minutes to hours. Irradiance in the Extremely Ultra-Violet (EUV) or X band is enhanced and it can produce a sudden ...
An overview of methodologies for real-time detection, characterisation and tracking of traveling ionospheric disturbances developed in the TechTIDE project
(2020-08-04)
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Article.
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The main objective of the TechTIDE project (warning and mitigation technologies for travelling ionospheric disturbances effects) is the development of an identification and tracking system for travelling ionospheric ...
Assessing the quality of ionospheric models through GNSS positioning error: methodology and results
(2020-01-01)
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Article.
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Single-frequency users of the global navigation satellite system (GNSS) must correct for the ionospheric delay. These corrections are available from global ionospheric models (GIMs). Therefore, the accuracy of the GIM is ...
The Mechanism for GNSS-Based Kinematic Positioning Degradation at High-Latitudes Under the March 2015 Great Storm
(2022-06)
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Article.
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In this study, we focus on the kinematic precise point positioning (PPP) solutions at high-latitudes during the March 2015 great geomagnetic storm. We aim to discover the mechanism behind the positioning degradation from ...
EGNOS 1046 maritime service assessment
(Multidisciplinary Digital Publishing Institute (MDPI), 2020-01-01)
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Article.
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The present contribution evaluates how the European Geostationary Navigation Overlay
System (EGNOS) meets the International Maritime Organization (IMO) requirements established in
its Resolution A.1046 for navigation in ...
Ionospheric corrections tailored to the Galileo High Accuracy Service
(2021-12)
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Article.
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The Galileo High Accuracy Service (HAS) is a new capability of the European Global Navigation Satellite System that is currently under development. The Galileo HAS will start providing satellite orbit and clock corrections ...
Cloud-based single-frequency Snapshot RTK positioning
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-05-26)
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Article.
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With great potential for being applied to Internet of Things (IoT) applications, the concept of cloud-based Snapshot Real Time Kinematics (SRTK) was proposed and its feasibility under zero-baseline configuration was confirmed ...
Network-based ionospheric gradient monitoring to support GBAS
(2021-02-11)
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Article.
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Large ionospheric gradients acting between a Ground Based Augmentation System (GBAS) reference station and an aircraft on approach could lead to hazardous position errors if undetected. Current GBAS stations provide solutions ...
Analysis of ‘Pre-Fit’ Datasets of gLAB by Robust Statistical Techniques
(MDPI AG, 2021-05-24)
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Article.
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The GNSS LABoratory tool (gLAB) is an interactive educational suite of applications for processing data from the Global Navigation Satellite System (GNSS). gLAB is composed of several data analysis modules that compute the ...
Inter-system biases solution strategies in multi-GNSS kinematic precise point positioning
(2023-07)
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Article.
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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 ...