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Using gps and vlbi technology to maintain 14 digit synchronization
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Ward, S. C. |
| Copyright Year | 1984 |
| Description | To facilitate the navigation of spacecraft to the outer planets, Jupiter and beyond, the JPL-NASA Deep Space Network (DSN) has implemented three ensembles of atomic clocks at widely separated locations. These clocks must be maintained, synchronized, to with a few parts in 10 to the 13th power of each other and, the entire group must be maintained, to a lesser degree, in synchronism with Coordinated Universal Time (UTC)NBS/USNO. Over the last 1 1/2 years the DSN has been using Global Positioning Satellites (GPS) and Very Long Baseline Interferometry (VLBI) technology to perform these critical Frequency and Time (F&T) synchronization tasks. A year of F&T synchronization data collected from the intercomparison of 3 sets of cesium and hydrogen maser driven clock ensembles through the use of GPS and VLBI techniques are covered. Also covered, are some of the problems met and limitations of these two techniques at their present level of technology. |
| File Size | 549430 |
| Page Count | 19 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19850020938 |
| Archival Resource Key | ark:/13960/t83j89h98 |
| Language | English |
| Publisher Date | 1984-01-01 |
| Access Restriction | Open |
| Subject Keyword | Very Long Base Interferometry Cesium 133 Global Positioning System Drift Instrumentation Satellite Navigation Systems Time Measurement Frequency Measurement Atomic Clocks Synchronized Oscillators Deep Space Network Resonant Frequencies Hydrogen Masers Frequency Synchronization Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
