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| The Research on Two-way Satellite Time and Frequency Technology |
| YANG Zhi-qiang,XU Qin-hua,LIANG Kun,GAO Yuan,ZHANG Ai-min |
| National Institute of Metrology, Beijing 100029, China |
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Abstract Two-way satellite time and frequency transfer is one of the most precise techniques of time and frequency transfer between laboratories.The NIM01 two-way satellite time and frequency transfer earth station was established in year 2008, and participate the Europe-Asia two-way satellite time and frequency transfer link now. The other participant laboratory is PTB, TL, NICT, NTSC, SU and NPLI. The two-way satellite time and frequency transfer comparative results of NIM and PTB, TL, NICT are analyzed. The results shown that Europe-Asia two-way satellite time and frequency transfer link is stable and the frequency stability (1day) is better than 5×10-15.6 Cesium fountains in 4 Institutes were compared by two-way satellite time and frequency transfer and GPS CP techniques. The calculation results show that the frequency differences of the fountains are not significant.
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2015, Vol. 36 
