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| Research on System of New Frequency Measurement Based on Multi-channel Dual Mixer Time Difference Measurement Instrument |
| ZHANG Yue,WANG Yu-zhuo,ZHANG Ai-min,Dong Kun,WANG Wei-bo |
| National Institute of Metrology, Beijing 100029, China |
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Abstract Research on the improvement of frequency standard measurement capability in recent years in NIM, the principle of dual mixer time difference measurement method, the basic structure and measurement results of new frequency measurement system based on comparing with old system of standard frequency are introduced, which is newly developed by NIM. The new frequency measurement system adopts dual mixer time difference measurement method and the uncertainty of the system is better than 3×10-13 (sample time is 1 second) and realizes the metrology of long-term and short-term stability of frequency standard, it proves that the system is high efficiency integrated test system.
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Received: 01 August 2017
Published: 06 July 2018
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Corresponding Authors:
Yue ZHANG
E-mail: 13521032128@163.com
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2018, Vol. 39 
