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

AN EXPERIMENTATION AND VERIFICATION NETWORK TO ANALYZE SMALL SCALE IONOSPHERIC DISTURBANCES

Kriegel, Martin and Berdermann, Jens and Wilken, Volker and Fohlmeister, Friederike and Antreich, Felix (2018) AN EXPERIMENTATION AND VERIFICATION NETWORK TO ANALYZE SMALL SCALE IONOSPHERIC DISTURBANCES. VII Brazilian Symposium on Space Geophysics and Aeronomy, 05.-09.11.2018, Santa Maria, Brasilien.

[img] PDF
916kB
[img] PDF
164kB

Official URL: http://www.sbgea.org.br/en/vii-sbgea-2/program-and-book-of-abstracts/

Abstract

Trans-ionospheric radio signals of global navigation satellite systems (GNSS) like GPS, GLONASS, and GALILEO may suffer from rapid and intensive fluctuations of their amplitude and phase caused by small scale irregularities of the ionospheric plasma. Such disturbances occur frequently during the evening hours in the equatorial region due to plasma flow inversion causing Plasma bubbles or during geomagnetic storms in the polar region. This phenomenon, which is called radio scintillation, can strongly disturb or even disrupt the signal transmission. We investigate the effect of small scale ionospheric irregularities on Global Navigation Satellite System (GNSS) positioning using an Experimentation and Verification Network (EVNet). The EVNet is a high rate GNSS receiver network for scintillation measurement from high latitudes down to equatorial region operated by DLR. We will inform about the recent status of the EVNet as well as its recent and future development. We will inform about new equipment used and present related research. Therefore we will present analysis results obtained primarily from two equatorial high rate EVNet GNSS receiver stations designed and operated by the German Aerospace Center (DLR) in cooperation with Bahir Dar University (BDU) at 11.6N, 37.4E. Both receivers collect raw data sampled at up to 50 Hz, from which characteristic scintillation parameters such as the S4 index are deduced. Both stations are located close to one another and aligned in an east west, direction which allows us to estimate the zonal drift velocity and spatial dimension of equatorial ionospheric plasma irregularities. Therefore, the lag times of moving electron density irregularities and scintillation patterns are derived by applying cross correlation analysis to high-rate measurements of the slant total electron content (sTEC) and to the associated signal power, respectively. Finally, the drift velocity is derived from the estimated lag time, taking into account the geometric constellation of both receiving antennas and the observed GPS satellites. Furthermore, we will show EVNet capabilities for space weather research and service as well as for other possible uses and investigations.

Item URL in elib:https://elib.dlr.de/128061/
Document Type:Conference or Workshop Item (Poster)
Title:AN EXPERIMENTATION AND VERIFICATION NETWORK TO ANALYZE SMALL SCALE IONOSPHERIC DISTURBANCES
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kriegel, MartinMartin.Kriegel (at) dlr.dehttps://orcid.org/0000-0001-5543-180X
Berdermann, JensJens.Berdermann (at) dlr.dehttps://orcid.org/0000-0002-3308-4584
Wilken, VolkerVolker.Wilken (at) dlr.deUNSPECIFIED
Fohlmeister, FriederikeFriederike.Fohlmeister (at) dlr.dehttps://orcid.org/0000-0002-2568-7473
Antreich, FelixInstituto Tecnológico de Aeronáutica (ITA), Brazilhttps://orcid.org/0000-0001-6596-0123
Date:8 November 2018
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:ionosphere, scintillation, GNSS, TEC, plasma bubbles, irregularities
Event Title:VII Brazilian Symposium on Space Geophysics and Aeronomy
Event Location:Santa Maria, Brasilien
Event Type:international Conference
Event Dates:05.-09.11.2018
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
Deposited By: Kriegel, Martin
Deposited On:25 Jun 2019 08:54
Last Modified:31 Jul 2019 20:25

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.