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Super-High Resolution Time Interval Measurement Method Based on Time-Space Relationships |
| DU Bao-Qiang1,2, ZHOU Wei1 |
| 1Institute of Signals and Data Processing, Xidian University, Xi'an 7100712Department of Information Engineering, Henan Vocation and Technical College, Zhengzhou 450046 |
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| Cite this article: |
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DU Bao-Qiang, ZHOU Wei 2009 Chin. Phys. Lett. 26 100601 |
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Abstract Based on the principle of quantized delay-time, a super-high resolution time interval measurement method is proposed based on time-space relationships. Using the delay-time stability that time and frequency signal travel in a specific medium, the measured time interval can be quantized. Combined with the phase coincidence detection technique, the measurement of time can be changed into the measurement of space length. The resolution and the stability of the measurement system are easily improved. Experimental results show that the measurement resolution of the measured time interval depends on the length difference of the double delay-time unit. When the length difference is set up on millimeter level or sub-millimeter level, super-high measurement resolution from hundreds of picosecond to tens of picosecond can be obtained.
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| Keywords:
06.30.Ft
06.20.Dk
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Received: 26 May 2009
Published: 27 September 2009
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[3] Li Z Q, Zhou W and Miao M 2008 Chin. Phys. Lett. 25 2820
[4] Li L and Zhou W 2007 IEEE Frequency ControlSymposium 5 815
[5] Du B Q, Zhou W, Dong SH F et al 2009 Chin. Phys.Lett. 26 070602
[6] Jansson J P and Mantyniemi A 2006 IEEE J. Solid-StateCircuits 41 1286 |
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