In order to improve the precision of time/frequency transfer via fiber,a method of digital phase compensation is proposed.

To obtain pressures and temperatures of the formations in oil and gas well testing,a downhole wireline remote telemetry method is developed by using time division frequency transmission technology in the Pressure-Low-Temperature-Low mode.

Measuring method and system for sonar signal transmission time;

Analysis in effects to high frequency protection command transmission time in carrier wave channel;

This paper introduces the parameter testing methods of protection channel,including transmission time,time broadening and removing locked signal etc.

A Scheduling Problem with Travel Time Between Machines;

The flowshop scheduling problem with travel time between machines is very practical and useful in the Robotics and FMS.

The micro-wave time transfer system between Lintong and Pucheng has been used to synchronize the time signal from the time-keeping clock room(located in Lintong)and the signal from the broadcast control clock room(located in Pucheng)for over 28 years till the end of 2006.

This paper developed a new approach to improve GPS carrier phase measurement, for the purpose to reduce the ambiguity integer value or use it in time transfer technology.