Abstract
Single frequency users of Global Navigation Satellite Systems (GNSS) need to correct link related ionospheric range errors of up to 100 m. Since this range error is proportional to the Total Electron Content (TEC) of the ionosphere, correction information can be provided by TEC maps deduced from corresponding GNSS measurements or by model values. In this paper we compare ionospheric correction models such as the Klobuchar (GPS) model, the NeQuick model, and the NTCM-GL model recently developed in DLR. It has been found that the NeQuick and NTCM-GL models show a similar performance which is by a factor of about 2 better than the performance of the Klobuchar model at the European sector. NTCM-GL needs only 12 coefficients and is fed by the solar radio flux index F10.7 to take into account the level of solar activity. Thus, the coefficients are fixed over a full solar cycle, no updating of coefficients is required. Hence, NTCM-GL may easily be used as a correction model for single frequency GNSS applications having a better performance than the Klobuchar model.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
