Results 21 to 30 of about 95,608 (153)

Differential Code Bias Estimation using Multi-GNSS Observations and Global Ionosphere Map [PDF]

open access: yes, 2014
Measurements of Global Navigation Satellite System (GNSS) receivers are affected by systematic offsets re- lated to group and phase delays of the signal generation and processing chain.
Hauschild, André   +2 more
core   +1 more source

Studying Ionosphere Responses to a Geomagnetic Storm in June 2015 with Multi-Constellation Observations

open access: yesRemote Sensing, 2018
The Global Navigation Satellite System (GNSS) observations with global coverage and high temporal and spatial resolution, provide abundant and high-quality Earth-ionosphere observations.
Yang Liu   +3 more
doaj   +1 more source

Trailing Equatorial Plasma Bubble Occurrences at a Low-Latitude Location through Multi-GNSS Slant TEC Depletions during the Strong Geomagnetic Storms in the Ascending Phase of the 25th Solar Cycle

open access: yesRemote Sensing, 2023
The equatorial plasma bubbles (EPBs) are depleted plasma density regions in the ionosphere occurring during the post-sunset hours, associated with the signal fading and scintillation signatures in the trans-ionospheric radio signals.
Ram Kumar Vankadara   +4 more
doaj   +1 more source

GNSS position solutions in Japan

open access: yes, 2022
This dataset includes solutions processed by ISTerre for all Japanese GNSS stations. These products are daily position time series (North, East and Vertical), in the ITRF14 reference frame, calculated from RINEX files using the double difference method ...
gnss-products
core   +1 more source

Phylogeny of Tec Family Kinases: Identification of a Pre-Metazoan Origin of Btk, Bmx, Itk, Tec, Txk and the Btk Regulator SH3BP5 [PDF]

open access: yes, 2008
It is generally considered mammals and birds have five Tec family kinases (TFKs): Btk, Bmx (also known as Etk), Itk, Tec, and Txk (also known as Rlk). Here, we discuss the domains and their functions and regulation in TFKs.
Ortutay, Csaba   +7 more
core   +2 more sources

Some statistics of Ionospheric total electron content variations at mid-latitude zones of Mongolia

open access: yesProceedings of the Mongolian Academy of Sciences, 2021
This work is focused on the correlation of ionosphere total electron content (TEC) with solar and geomagnetic activities of the space weather at mid-latitude zone.
Baatarkhuu Dagva   +2 more
doaj   +1 more source

GNSS total variometric approach: first demonstration of a tool for real-time tsunami genesis estimation

open access: yesScientific Reports, 2021
Global Navigation Satellite System (GNSS) is used in seismology to study the ground displacements as well as to monitor the ionospheric total electron content (TEC) perturbations following seismic events.
Michela Ravanelli   +5 more
doaj   +1 more source

A Bidirectional Deep-Learning Algorithm to Forecast Regional Ionospheric TEC Maps

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
The rapid evolutions in artificial intelligence and the machine learning era have significantly improved accuracy for ionospheric space weather forecasting models.
Kondaveeti Sivakrishna   +2 more
doaj   +1 more source

GNSS signal phase, TEC, and phase unwrapping errors

open access: yesNAVIGATION, 2020
Precise measurements of signal phase are essential for Global Navigation Satellite System (GNSS) position estimates. However, propagation through the earth's ionosphere imposes frequency-dependent phase errors. The frequency dependence is exploited to correct phase errors proportional to total electron content (TEC) divided by frequency.
Charles Rino   +4 more
openaire   +2 more sources

A new multipath mitigation method for GNSS receivers based on antenna array [PDF]

open access: yes, 2012
the potential of small antenna array for multipath mitigation in GNSS systems is considered in this paper. To discriminate the different incoming signals (Line of sight and multipaths), a new implementation of the well known SAGE algorithm is proposed ...
Rougerie, Sébastien   +4 more
core   +1 more source

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