Design and implementation of dual one-way precise ranging and time synchronization system

With the development of science technique in aeronautic and astronautic testing navigation, communication, as well as electric power, etc, time synchronization has been needed in more and more engineers and sciences fields. Dual one-way ranging can get more veracity of measure precision than one-way due to eliminating the common measure error between two points. This article describes the use of dual one-way pseudo-code and carrier phase precise measurement for realizing time synchronization technique. The results of the experiment showed that DRTS system reached 0.15cm and 5ps in 1s time interval, the precision of this system reached 3.46ns and 9.43ps by using different and the same frequency reference of the order of e-10/d respectively. Dual one-way ranging and time synchronization can be applied in aeronautic and astronautic measurement and control system, and in achieving high precision time platform in message transfer field. It also can provide time service between satellite and satellite, satellite and ground station, aircrafts, stations and other patterns.