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Precise Frequency Comparison System Using Phase Coincidence Demarcation
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DOI：10.1109/TIM.2019.2904130.png)
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The precise frequency comparison system is of great importance in many applications. A frequency comparison method based on the phase coincidence demarcation (PCD) is proposed, and a frequency comparison system based on the proposed method is realized. The proposed method solves the uncertainty problem of the phase coincidence detection circuit by using two analog-to-digital converter (ADC) chips to demarcate the phase coincidence points. The test results indicate that the precision of the realized frequency comparison system is 10(-16) (Allan deviation) at 1000 s.
Keyword:
Standards
Phase frequency detector
Phase measurement
Time-frequency analysis
Time measurement
Demarcation of phase coincidence point
frequency standards comparison
greatest common factor frequency
phase coincidence detection
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5.9
论文数:
2.0W
被引数:
5.8W
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