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Ionospheric Effects on High Gain Antenna GNSS Measurements – TEC Estimation and Correction

Thoelert, Steffen and Hörmann, Ulrich and Antreich, Felix and Meurer, Michael (2017) Ionospheric Effects on High Gain Antenna GNSS Measurements – TEC Estimation and Correction. In: ION GNSS 2017. ION GNSS+, 25. - 29. Sep. 2017, Portland, USA.

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Abstract

The ionospheric delay of global navigation satellite systems (GNSS) signals typically is compensated by adding a single correction value to the pseudorange measurement of a GNSS receiver. Yet, this neglects the dispersive nature of the ionosphere. In this context we analyze the ionospheric signal distortion beyond a constant delay. These effects become increasingly significant with the signal bandwidth and hence more important for new broadband navigation signals. Using measurements of the Galileo E5 signal, captured with a high gain antenna, we verify that the expected influence can indeed be observed and compensated. A new method to estimate the total electron content (TEC) from a single frequency high gain antenna measurement of a broadband GNSS signal is proposed and described in detail. The received signal is de facto unaffected by multi-path and interference because of the narrow aperture angle of the used antenna which should reduce the error source of the result in general. We would like to point out that such measurements are independent of code correlation, like in standard receiver applications. It is therefore also usable without knowledge of the signal coding. Results of the TEC estimation process are shown and discussed comparing to common TEC products like TEC maps and dual frequency receiver estimates.

Item URL in elib:https://elib.dlr.de/114553/
Document Type:Conference or Workshop Item (Speech)
Title:Ionospheric Effects on High Gain Antenna GNSS Measurements – TEC Estimation and Correction
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Thoelert, Steffeniknhttps://orcid.org/0000-0003-4653-318X
Hörmann, UlrichUniversität PotsdamUNSPECIFIED
Antreich, FelixFederal University of Ceará (UFC), Fortaleza, BrazilUNSPECIFIED
Meurer, Michaelmichael.meurer (at) dlr.deUNSPECIFIED
Date:September 2017
Journal or Publication Title:ION GNSS 2017
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Ionosphere, Galileo E5, TEC estimation
Event Title:ION GNSS+
Event Location:Portland, USA
Event Type:international Conference
Event Dates:25. - 29. Sep. 2017
Organizer:ion.org
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 GNSS2/Neue Dienste und Produkte
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Navigation
Deposited By: Thölert, Steffen
Deposited On:17 Oct 2017 09:40
Last Modified:31 Jul 2019 20:12

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