Assessment of the NeQuick-2 and IRI-Plas 2017 models using global and long-term GNSS measurements

D Okoh, S Onwuneme, G Seemala, S **… - Journal of Atmospheric …, 2018‏ - Elsevier
The global ionospheric models NeQuick and IRI-Plas have been widely used. However,
their uncertainties are not clear at global scale and long term. In this paper, a climatologic …

NeQuick 2 and IRI Plas VTEC predictions for low latitude and South American sector

RG Ezquer, LA Scida, YM Orué, B Nava… - Advances in Space …, 2018‏ - Elsevier
Using vertical total electron content (VTEC) measurements obtained from GPS satellite
signals the capability of the NeQuick 2 and IRI Plas models to predict VTEC over the low …

SNOOPI: Demonstrating Earth remote sensing using P-band signals of opportunity (SoOp) on a CubeSat

JL Garrison, MA Vega, R Shah, J Mansell… - Advances in Space …, 2023‏ - Elsevier
Abstract SigNals Of Opportunity: P-band Investigation (SNOOPI) will be the first in-space
demonstration of P-band (240-380 MHz) signals of opportunity (SoOp) remote sensing and …

A new parameterized approach for ionospheric tomography

B Chen, L Wu, W Dai, X Luo, Y Xu - GPs solutions, 2019‏ - Springer
GNSS ionospheric tomography technique is capable to reconstruct the high-quality 3D
ionospheric electron density (IED) images with a relatively low cost. We present a new …

An examination of the Galileo NeQuick model: comparison with GPS and JASON TEC

N Wang, Y Yuan, Z Li, Y Li, X Huo, M Li - GPS solutions, 2017‏ - Springer
We evaluate the performance of Galileo broadcast NeQuick model by comparing it with GPS
broadcast Klobuchar and the original NeQuick2 models. The broadcast coefficients of …

On the performance of the IRI‐2012 and NeQuick2 models during the increasing phase of the unusual 24th solar cycle in the Brazilian equatorial and low‐latitude …

K Venkatesh, PR Fagundes… - Journal of …, 2014‏ - Wiley Online Library
It is known that the equatorial and low‐latitude ionosphere is characterized with typical
dynamical phenomena namely, the equatorial ionization anomaly (EIA). Accurate modeling …

Validation of the NeQuick 2 and IRI-2007 models in East-African equatorial region

M Nigussie, SM Radicella, B Damtie, B Nava… - Journal of Atmospheric …, 2013‏ - Elsevier
This paper examines the performances of NeQuick 2 and IRI-2007 ionospheric empirical
models in describing the monthly median characteristics of the equatorial region …

TEC derived from some GPS stations in Nigeria and comparison with the IRI and NeQuick models

AB Rabiu, AO Adewale, RB Abdulrahim… - Advances in Space …, 2014‏ - Elsevier
Total electron content (TEC) measured simultaneously using Global Positioning System
(GPS) ionospheric monitors installed at some locations in Nigeria during the year 2011 (Rz …

Ionosphere modelling for Galileo single frequency users: illustration of the combination of the NeQuick model and GNSS data ingestion

B Bidaine, R Warnant - Advances in Space Research, 2011‏ - Elsevier
The ionospheric effect remains one of the main factors limiting the accuracy of Global
Navigation Satellite Systems (GNSS) including Galileo. For single frequency users, this …

Assessment of International GNSS Service Global Ionosphere Map products over China region based on measurements from the Crustal Movement Observation …

J Hu, HB Ruan, FQ Huang, SY Gu… - Earth and Planetary …, 2023‏ - eppcgs.org
The global ionosphere maps (GIM) provided by the International GNSS Service (IGS) are
extensively utilized for ionospheric morphology monitoring, scientific research, and practical …