Citation
Abstract
The intercontinental clock synchronization capabilities of Very Long Baseline Interferometry (VLBI) and the Navigation Technology Satellite (NTS) were compared in May 1978 by using both methods to synchronize the cesium clocks at the NASA Deep Space Net complexes at Madrid, Spain, and Goldstone, California. The VLBI experiments used the Wideband VLBI Data Acquisition System developed at the NASA Jet Propulsion Laboratory. The Navigation Technology Satellites, which were designed and built by the Naval Research Laboratory, were used with NTS Timing Receivers developed by the Goddard Space Flight Center. The two methods agreed at about the one-half microsecond level. The VLBI system also obtained long-term stability information on the HP5061A004 cesium standards by measuring AT/T over four 3- to 4-day intervals, obtaining stability estimates of (1 + 1) X 10-13 for the combined timing systems.
Details
- Volume
- 42-49
- Published
- February 15, 1979
- Pages
- 64–69
- File Size
- 553.3 KB