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Phase group synchronization between any signals and its physical characteristics

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Abstract

The phase group synchronization between any signals is further revealed, which is based on proposing the new concepts of the greatest common factor frequency, the least common multiple period, quantized phase shift resolution, equivalent phase comparison frequency and so on. Then the problem of phase comparison and processing between different frequency signals is solved and shown in detail. Using the basic principle and the variation law of group phase difference, the frequency stability better than 10−14/s can be easily obtained in the time & frequency measurement and control domain, and experimental results also show the phase relations between atomic energy level transition signal and the locked crystal oscillator signal in an active hydrogen atomic clock are strict phase group synchronization, and locked precision with 10−13/s can be reached based on phase group synchronization. The phase group synchronization can provide technical support to frequency linking among radio frequency, microwave and light frequency.

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Authors and Affiliations

  1. School of Electric and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450002, China

    BaoQiang Du, LinLin Shi, LingZhi Cao & ShuTing Guo

  2. The 20th Research Institute of China Electronics Technology Group Corporation, Xi’an, 710071, China

    YaoMing Chen

  3. Institute of Signals and Data Processing, Xidian University, Xi’an, 710068, China

    ShaoFeng Dong

  4. The 27th Research Institute of China Electronics Technology Group Corporation, Zhengzhou, 450015, China

    ZhiGang Yang

Authors
  1. BaoQiang Du
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  2. LinLin Shi
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  3. YaoMing Chen
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  4. ShaoFeng Dong
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  5. ZhiGang Yang
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  6. LingZhi Cao
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  7. ShuTing Guo
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Correspondence to BaoQiang Du.

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Du, B., Shi, L., Chen, Y. et al. Phase group synchronization between any signals and its physical characteristics. Sci. China Phys. Mech. Astron. 57, 674–679 (2014). https://doi.org/10.1007/s11433-013-5194-2

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  • DOI: https://doi.org/10.1007/s11433-013-5194-2

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