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.
张越,王玉琢,张爱敏,董堃,王伟波. 基于多路双混频时差测量仪的新频率测量系统[J]. 计量学报, 2018, 39(4): 568-571.
ZHANG Yue,WANG Yu-zhuo,ZHANG Ai-min,Dong Kun,WANG Wei-bo. Research on System of New Frequency Measurement Based on Multi-channel Dual Mixer Time Difference Measurement Instrument. Acta Metrologica Sinica, 2018, 39(4): 568-571.
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2018, Vol. 39 
