DocumentCode
983046
Title
A Very Low Frequency (VLF) Synchronizing System
Author
Looney, Chesley H., Jr.
Author_Institution
Head, Time Measurement Branch, Tracking Systems Div., Natl. Aeronautics and Space Administration, Goddard Space Flight Center, Greenbelt, Md.
Volume
49
Issue
2
fYear
1961
Firstpage
448
Lastpage
452
Abstract
A receiving system for the use of standard-frequency Navy and NBS VLF transmissions to phase-control a local frequency standard has been designed, built, and tested. Frequency synchronization accuracies of better than one part in 10,000,000,000 are practical, and the electronic instrumentation of the receiving system is not complex. Techniques for time synchronization to similar accuracies are not yet available; however, a time standard may be maintained in time accuracy to within 10 ¿sec once a synchronization is performed.
Keywords
Aerospace electronics; Calibration; Extraterrestrial measurements; Frequency synchronization; NIST; RF signals; Satellite broadcasting; Senior members; Time measurement; Timing;
fLanguage
English
Journal_Title
Proceedings of the IRE
Publisher
ieee
ISSN
0096-8390
Type
jour
DOI
10.1109/JRPROC.1961.287805
Filename
4066357
Link To Document