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Ionospheric limitations to time transfer by satellite
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Knowles, S. H. |
| Copyright Year | 1983 |
| Description | The ionosphere can contribute appreciable group delay and phase change to radio signals traversing it; this can constitute a fundamental limitation to the accuracy of time and frequency measurements using satellites. Because of the dispersive nature of the ionosphere, the amount of delay is strongly frequency-dependent. Ionospheric compensation is necessary for the most precise time transfer and frequency measurements, with a group delay accuracy better than 10 nanoseconds. A priori modeling is not accurate to better than 25%. The dual-frequency compensation method holds promise, but has not been rigorously experimentally tested. Irregularities in the ionosphere must be included in the compensation process. |
| File Size | 594367 |
| Page Count | 17 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19850020922 |
| Archival Resource Key | ark:/13960/t7hq8s696 |
| Language | English |
| Publisher Date | 1983-01-01 |
| Access Restriction | Open |
| Subject Keyword | Geophysics Radio Waves Accuracy Radio Astronomy Calibrating Global Positioning System Ionospheric Disturbances Ionospheric Propagation Frequency Measurement Antennas Interferometers Electrons Time Lag Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
