Remarks on world wide time synchronization by VLF
Dual very low frequency transmission for time synchronization of ground station clocks
Chi, A. R.↗
Engineering topics
Publications and source records attributed to Chi, A. R..
Dual very low frequency transmission for time synchronization of ground station clocks
Receiver design and results of dual VLF TRANSMISSIONS for obtaining timing information
Frequency and time synchronization at NASA TRACKING stations