Citation
Abstract
This report describes the continuation of the short baseline QVLBI demonstrations, which are designed to examine the stability of the current Doppler frequency system. A total of six passes of simultaneous two-way and three-way doppler data from Pioneer 10 were obtained at Deep Space Station (DSS) 11 and DSS 14. Results indicate that the short-term (min), medium-term (hr) and long-term (month) stabilities of the new rubidium frequency standard (HP 5065A) are 8 parts in 101°, 1.3 parts in 101%, and 1.9 parts in 10", respectively. The relative drift rate between the two systems (DSS 11 and DSS 14) is around 6 mHz/month. This indicates that the long-term stability of the current frequency system exceeds our limit level and makes the coming quasi very-long baseline interferometer (QVLBI) (MVM’73) demonstration very difficult.
Details
- Volume
- 42-20
- Published
- April 15, 1974
- Pages
- 20–26
- File Size
- 637.7 KB