A Group-Period Phase Comparison Method Based on Equivalent Phase Comparison Frequency

doi:10.1088/0256-307X/26/7/070602

Chin. Phys. Lett.

2009, Vol. 26

Issue (7): 070602 DOI: 10.1088/0256-307X/26/7/070602

GENERAL

A Group-Period Phase Comparison Method Based on Equivalent Phase Comparison Frequency

DU Bao-Qiang^1,2, ZHOU Wei¹, DONG Shao-Feng¹, ZHOU Hai-Niu¹

¹Department of Measurement and Instrument, Xidian University, Xi'an 710071²Department of Information Engineering, Henan Vocational and Technical College, Zhengzhou 450046

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DU Bao-Qiang, ZHOU Wei, DONG Shao-Feng et al 2009 Chin. Phys. Lett. 26 070602

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Abstract Based on the principle of equivalent phase comparison frequency, we propose a group-period phase comparison method. This method can be used to reveal the inherent relations between periodic signals and the change laws of the phase difference. If these laws are applied in the processing of the mutual relations between frequency signals, phase comparison can be accomplished without frequency normalization. Experimental results show that the method can enhance the measurement resolution to 10^-13/s in the time domain.

Keywords: 06.30.Ft 06.20.Dk

Received: 11 March 2009 Published: 02 July 2009

PACS:	06.30.Ft	(Time and frequency)
	06.20.Dk	(Measurement and error theory)

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https://cpl.iphy.ac.cn/10.1088/0256-307X/26/7/070602 OR https://cpl.iphy.ac.cn/Y2009/V26/I7/070602

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	DU Bao-Qiang
	ZHOU Wei
	DONG Shao-Feng
	ZHOU Hai-Niu

[1] Li Z Q, Zhou W and Miao M 2008 Chin. Phys. Lett. 25 2820
[2] Zhou W 1992 IEEE Frequency Control Symp. 6p270
[3] Zhou W 2008 IEEE Frequency Control Symp. 9 468
[4] Sun S X and Zhou W 2005 Mod. Electron. Technol. 10 10 (in Chinese)
[5] Chen F X 2008 IEEE Frequency Control Symp. 5156
[6] Zhou H 2006 IEEE Frequency Control Symp. 8 267

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