NDLI: High-precision time and frequency measurement method combining time-space conversion and different frequency phase detection

Content Provider	Springer Nature Link
Author	Du, BaoQiang Wang, YanFeng Cui, GuangZhao Guo, ShuTing Dong, ShaoFeng Liu, Dan
Copyright Year	2013
Abstract	According to the time & space conversion relations and different frequency phase detection principle, an ultra-high precision time & frequency measurement method is proposed in this paper. The higher accuracy and stability of the speed of light and electromagnetic signals during the transmission in space or a specific medium enable the measurement of short time interval which uses the coincidence detection of signal’s transmission delay in length. The measurement precision better than 10 picoseconds can be easily obtained. The method develops the length vernier utilizing the stability of signal’s transmission delay, minimizes the fuzzy region of phase coincidence between the standard frequency signal and the measured signal, approaches the best phase coincidences and therefore improves the measurement precision which is higher than the precision provided by the traditional methods based on frequency processing. Besides, the method costs less than the traditional methods and can also solve the problem of the measurement of super-high frequency. Experimental results show the method can improve the measurement precision to 10$^{−12}$/s in the time & frequency domain.
Starting Page	2110
Ending Page	2115
Page Count	6
File Format	PDF
ISSN	16747348
Journal	Science in China Series G
Volume Number	56
Issue Number	11
e-ISSN	18691927
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-10-03
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	time and space conversion delay-time phase shift different phase coincidence detection group phase difference Physics Classical Continuum Physics Astronomy, Observations and Techniques
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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