Results 11 to 20 of about 95,608 (153)

IONOSPHERIC TEMPORAL-SPATIAL CORRELATION ANALYSIS USING GNSS NETWORKS OVER CHINA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023
The Global Navigation Satellite System (GNSS) is well recognized as a valuable tool for studying ionospheric variation, providing a means to measure variations in the Total Electron Content (TEC) of the ionosphere.
Y. Xiang, Z. Li, N. Wang, L. Pei, W. Yu
doaj   +1 more source

Improved Ionospheric Correction for Dual Frequency and Differential GPS Positioning Methods [PDF]

open access: yes, 2007
A new three dimensional (3-D) electron density model has been developed that can give a very accurate description of the real ionospheric variation; latitudinally,longitudinally and altitudinally.
Nagarajoo, Karthigesu
core   +7 more sources

Editorial for the Special Issue “GNSS, Space Weather and TEC Special Features”

open access: yesRemote Sensing, 2023
For high-quality scientific communication in the field of technical and natural sciences, it is of utmost importance to ensure clarity of the text, logical mathematical argumentation, and the possibility of verifying the obtained theoretical results using appropriate experiments [...]
Serdjo Kos   +2 more
openaire   +4 more sources

Determining regional ionospheric model and comparing with global models [PDF]

open access: yesGeodetski Vestnik, 2017
GNSS (Global Navigation Satellite System) signals pass through various layers of the atmosphere until reaching the receiver on the Earth. The ionosphere, one of these layers, is about 70 km to 1000 km above the Earth surface and constantly changes with ...
Fuat Basciftci   +3 more
doaj   +1 more source

Global TEC maps based on GNSS data: 1. Empirical background TEC model [PDF]

open access: yesJournal of Geophysical Research: Space Physics, 2013
AbstractA global background total electron content (TEC) model is built by using the Center for Orbit Determination of Europe (CODE) TEC data for full 13 years, 1999–2011. It describes the climatological behavior of the ionosphere under both its primary external driver, i.e., the direct photo‐ionization by incident solar radiation, and regular wave ...
P. Mukhtarov   +3 more
openaire   +1 more source

Ionospheric Behavior during the 10 June 2021 Annular Solar Eclipse and Its Impact on GNSS Precise Point Positioning

open access: yesRemote Sensing, 2022
The main effects of the 10 June 2021 annular solar eclipse on GNSS position estimation accuracy are presented. The analysis is based on TEC measurements made by 2337 GNSS stations around the world.
Juan Carlos Valdés-Abreu   +4 more
doaj   +1 more source

Seven days in Chile: Impact of the 2011 Puyehue-Cordon Caulle volcanic eruption on GPS ionospheric delay [PDF]

open access: yesE3S Web of Conferences, 2019
Satellite navigation is a global utility and an essential component of national infrastructure. Disruptions of GNSS PNT services may be considered a threat to society and civilisation in general.
Jukić Oliver   +3 more
doaj   +1 more source

Study of Spatial and Temporal Variations of Ionospheric Total Electron Content in Japan, during 2014–2019 and the 2016 Kumamoto Earthquake

open access: yesSensors, 2021
There are a large number of excellent research cases in Global Navigation Satellite System (GNSS) positioning and disaster prediction in Japan region, where the simulation and prediction of total electron content (TEC) is a powerful research method.
Tianyang Hu, Yibin Yao, Jian Kong
doaj   +1 more source

A Regional Model of Topside Ionospheric Effective Scale Heights Derived From Ionosonde and GNSS TEC

open access: yesSpace Weather, 2023
Ionospheric scale height is critical for the structure of electron density profile in the ionosphere. However, mostly, the effective scale heights (fitted with mathematical functions) instead of topside ionospheric scale heights were used to reconstruct ...
Chunhua Jiang   +6 more
doaj   +1 more source

gnss-ro/aws-opendata: GNSS-RO AWS Open Data v1.0.0

open access: yes, 2023
GNSS Radio Occultation Data in the AWS ...
gnss-ro, amymcvey, ssleroy
core   +1 more source

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