elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Estimation of spatial gradients and temporal variations of the total electron content using ground based GNSS measurements

Jakowski, Norbert and Hoque, Mohammed Mainul (2018) Estimation of spatial gradients and temporal variations of the total electron content using ground based GNSS measurements. Space Weather. Wiley. DOI: 10.1029/2018SW002119 ISSN 1542-7390

[img] PDF - Published version
3MB

Abstract

Precision and safety of life applications of Global Navigation Satellite Systems require key information on space weather conditions in particular on the perturbation degree of the ionosphere. Such systems are particularly vulnerable against severe spatial gradients and rapid changes of the total electron content (TEC) measured along different satellite-receiver links. To estimate spatial gradients and rapid temporal variations of ionospheric TEC, two approaches are discussed. The Gradient Ionosphere indeX (GIX) and the Sudden Ionospheric Disturbance indeX (SIDX) are able to estimate the perturbation degree of the ionosphere instantaneously without taking into account previous measurements. The capabilities and accuracy of the index approaches are demonstrated by simulations using a 3D electron density model of the ionosphere and plasmasphere in conjunction with realistic GNSS constellations. Real data tests confirm the applicability of GIX and the related standard deviation GIXS to monitor spatial gradients. SIDX is able to monitor rapid temporal variations of TEC as exemplified by using GNSS measurements carried out during solar flare events. Both approaches could identify enhanced space weather impacts on precise point positioning and the European Geostationary Overlay Service (EGNOS). More comprehensive studies analyzing ionospheric storms in close dialogue with potential customers are needed to fully utilize the potential of these approaches to serve as objective ionospheric indices for scaling horizontal TEC gradients and rapid TEC variations in space weather services.

Item URL in elib:https://elib.dlr.de/126493/
Document Type:Article
Title:Estimation of spatial gradients and temporal variations of the total electron content using ground based GNSS measurements
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Jakowski, NorbertNorbert.Jakowski (at) dlr.dehttps://orcid.org/0000-0003-3174-2624
Hoque, Mohammed MainulMainul.Hoque (at) dlr.deUNSPECIFIED
Date:11 February 2018
Journal or Publication Title:Space Weather
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
DOI :10.1029/2018SW002119
Publisher:Wiley
ISSN:1542-7390
Status:Published
Keywords:Ionosphere, TEC, GNSS, gradients
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication and Navigation
DLR - Research area:Raumfahrt
DLR - Program:R KN - Kommunikation und Navigation
DLR - Research theme (Project):R - Vorhaben Ionosphäre
Location: Neustrelitz
Institutes and Institutions:Institute of Communication and Navigation > Navigation
Deposited By: Jakowski, Dr.rer.nat. Norbert
Deposited On:15 Mar 2019 14:03
Last Modified:21 Sep 2019 05:05

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.