The copyright line for this article was changed on 18 September 2014.
Ionospheric corrections for GPS time transfer
Article first published online: 20 MAR 2014
©2014. The Authors.
This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Volume 49, Issue 3, pages 196–206, March 2014
How to Cite
2014), Ionospheric corrections for GPS time transfer, Radio Sci., 49, 196–206, doi:10.1002/2013RS005212., , , and (
- Issue published online: 15 APR 2014
- Article first published online: 20 MAR 2014
- Accepted manuscript online: 9 JAN 2014 07:42PM EST
- Manuscript Accepted: 7 JAN 2014
- Manuscript Revised: 3 DEC 2013
- Manuscript Received: 8 APR 2013
- time transfer;
A real-time ionospheric mapping system is tested to investigate its ability to compensate for the ionospheric delay in single-frequency Global Positioning System (GPS) time transfer over Europe. This technique is compared with two other single-frequency systems: one that does not incorporate any ionospheric correction and one that uses the broadcast Klobuchar model. A dual-frequency technique is also shown as a benchmark. A period in March 2003, during a solar maximum, has been used to display results when the ionospheric delays are large and variable. Data from two European GPS monitoring centers were used to test the time-transfer methods. For averaging times between several minutes and a few hours, the instabilities in the time transfers were dominated by ionospheric effects. The instabilities at longer averaging times were found to be due to clock noise and hardware instabilities. Improvements in time-transfer instabilities are shown by using the ionospheric tomography system.