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Performance comparison of ionospheric models used for GNSS positioning

Cokrlic, Marija and Galas, Roman and Hoque, Mohammed Mainul and Jakowski, Norbert and Wilken, Volker and Wezka, Kinga (2013) Performance comparison of ionospheric models used for GNSS positioning. the 150th Anniversary of International Association of Geodesy, 2013-09-01 - 2013-09-06, Potsdam, September.

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An evaluation of applicability of ionospheric corrections derived from the two global total electron content (TEC) maps, Neustrelitz DLR/GIM and Center for Orbit Determination in Europe CODE/GIM, for mitigation of ionospheric threads in precise GNSS positioning, has been done. Investigations on the both models have been performed in the following empirical approach. Investigation in the domain of coordinates: Processing of selected static GPS data in relative pseudo-kinematic mode, taking ionospheric corrections from the two selected models, to solve for position at every observational epoch. Comparison of the obtained results (time series of coordinates) with precise reference coordinates of the station calculated over a long time period. Investigation in the domain of TEC corrections: Preparation of two time series of interpolated TEC values for the all observation epochs using the CODE- and DLR maps, and calculation of TEC time series from the recorded GPS observations. Comparison and analysis of the all three sets of TEC values. Calculation of the Rate of TEC (ROT) and of scintillation index S4 as indicators of ionospheric irregularities. Analysis of the time series of TEC, ROT, S4 and the pseudo-kinematic station coordinates to detect and identify origin of anomalous signals. Experimental GPS data from the continuously operated station at Kiruna (Sweden) located at the polar region, and Wettzell (Germany)located at mid latitude, have been processed. The paper presents first results of investigations on GPS data recorded during a quiet period and under the presence of ionospheric irregularities. Further investigations are in progress.

Item URL in elib:https://elib.dlr.de/88755/
Document Type:Conference or Workshop Item (Speech)
Title:Performance comparison of ionospheric models used for GNSS positioning
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Jakowski, NorbertUNSPECIFIEDhttps://orcid.org/0000-0003-3174-2624UNSPECIFIED
Wilken, VolkerUNSPECIFIEDhttps://orcid.org/0009-0001-6783-7062UNSPECIFIED
Date:September 2013
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Global Ionospheric Model, Total Electron Content, Ionospheric Perturbations
Event Title:the 150th Anniversary of International Association of Geodesy
Event Location:Potsdam, September
Event Type:international Conference
Event Start Date:1 September 2013
Event End Date:6 September 2013
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 (old)
Location: Neustrelitz
Institutes and Institutions:Institute of Communication and Navigation > Navigation
Deposited By: Hoque, Mohammed Mainul
Deposited On:21 Jul 2014 10:17
Last Modified:24 Apr 2024 19:54

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