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Ionospheric Correction using NTCM driven by GPS Klobuchar Coefficients for GNSS Applications

Hoque, Mohammed Mainul and Jakowski, Norbert and Berdermann, Jens (2017) Ionospheric Correction using NTCM driven by GPS Klobuchar Coefficients for GNSS Applications. GPS Solutions. Springer. doi: 10.1007/s10291-017-0632-7. ISSN 1080-5370.

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Official URL: https://link.springer.com/article/10.1007/s10291-017-0632-7


Global Navigation Satellite Systems (GNSS) require mitigation of ionospheric propagation errors because the ionospheric range errors might be larger than tens of meters at the zenith direction. Taking advantage of the frequency dispersive property of ionospheric refractivity, the ionospheric range errors can be mitigated in dual-frequency applications to a great extent by a linear combination of carrier phases or pseudoranges. However, single frequency GNSS operations require additional ionospheric information to apply signal delay or range error corrections. To aid single frequency operations, the Global Positioning System (GPS) broadcasts 8 coefficients as part of the navigation message to drive the Ionospheric Correction Algorithm (ICA) also known as Klobuchar model. We presented here an ionospheric correction algorithm called Neustrelitz TEC model (NTCM) which can be used as complementary to the GPS ICA. Our investigation shows that the NTCM can be driven by Klobuchar model parameters to achieve a significantly better performance than obtained by the mother ICA algorithm. Our research, using post processed reference total electron content (TEC) data from more than one solar cycle, shows that on average the RMS modelled TEC errors are up to 40% less for the proposed NTCM model compared to the Klobuchar model during high solar activity period, and about 10% less during low solar activity period. Such an approach does not require major technology changes for GPS users rather requires only introducing the NTCM approach a complement to the existing ICA algorithm while maintaining the simplicity of ionospheric range error mitigation with an improved model performance.

Item URL in elib:https://elib.dlr.de/112973/
Document Type:Article
Title:Ionospheric Correction using NTCM driven by GPS Klobuchar Coefficients for GNSS Applications
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Jakowski, NorbertUNSPECIFIEDhttps://orcid.org/0000-0003-3174-2624UNSPECIFIED
Berdermann, JensUNSPECIFIEDhttps://orcid.org/0000-0002-3308-4584UNSPECIFIED
Journal or Publication Title:GPS Solutions
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Keywords:GNSS, positioning, Ionosphere Correction, NTCM model
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:07 Jul 2017 10:34
Last Modified:03 Nov 2023 13:52

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