A Group-Period Phase Comparison Method Based on Equivalent Phase Comparison Frequency
DU Bao-Qiang1,2, 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
A Group-Period Phase Comparison Method Based on Equivalent Phase Comparison Frequency
DU Bao-Qiang1,2, 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
摘要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.
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.
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2009, Vol. 26 
