Time and frequency transfer

Time and frequency transfer describes mechanisms for comparing measurements of time and frequency from one location to another. The technique is commonly used for creating and distributing standard time scales such as International Atomic Time (TAI).

Examples

Examples of time and frequency transfer techniques include:

• Simultaneous observation methods:
  • Simultaneous carrier phase observation of GPS signals
  • Time transfer by simultaneous observation of TV transmissions
  • Time transfer by simultaneous observation of radio astronomy signals
• Two-way transfer methods:
  • Two-way satellite time and frequency transfer
• Network methods:
  • Network Time Protocol
  • Precision Time Protocol

See also

• Synchronization
• Time transfer
• Time signal
• Time synchronization
• Time synchronization in North America

External links

• GPS and TV Time Comparison Techniques
• Time and Frequency Transfer using the phase of the GPS Carrier