부산대학교 도서관

A precise time and frequency transfer between the satellite-onboard atomic clocks and the ground reference clocks has been planned for the Engineering Test Satellite-VIII (ETS-VIII) under the collaboration between the National Institute of Information and Communications Technology (NICT) and the Japan Aerospace Exploration Agency (JAXA). ETS-VIII is a Japanese Geostationary Satellite, which will be launched in 2005. It has missions for mobile communication experiments and for precision timing experiments using Cesium atomic clocks in space. The NICT developed the Time Comparison Equipment (TCE) for ETS-VIII. This paper describes about the precise time transfer system between the ground reference clock and the on board clock. It is designed to make the time transfer by around 10 pico second of the precision carefully.