Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2013, Vol. 36 ›› Issue (6): 84-88.doi: 10.13190/j.jbupt.2013.06.018

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Extra-High Frequency Measurement for Picoseconds Resolution

DU Bao-qiang1, ZUO Yan-di1, ZHOU Wei1,2, DONG Shao-feng2, WANG Yan-feng1   

  1. 1. School of Electric and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China;
    2. Department of Measurement and Instrument, Xidian University, Xi'an 710071, China
  • Received:2013-03-05 Online:2013-12-31 Published:2013-12-31

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Abstract:

The extra-high frequency measurement is a hot issue of research in the field of current international time-frequency measurement and control. Aiming at difficult measurement and uncertain precision of extra-high frequency in time and frequency measurement domain and combining time and space conversion relations, an extra-high frequency measurement in picoseconds was proposed. Utilizing different frequency phase detection principle, a precise short time interval measurement was changed into the measurement of frequency. By introducing conversion relations of the time and space and using stability of signal delay in the course of transmission, a phase difference of delay time was obtained based on measuring space length value. Furthermore, an extra-high frequency measurement could be achieved in the proposed method. Experiment shows that the measurement resolution of 10-12 within 1 s can be reached in radio frequency range. Comparing the traditional frequency measurement method, the proposed method features simple structure, low cost and high measurement precision.

Key words: time and space conversion, different frequency phase detection, delay transmission, frequency measurement

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