Phase difference variation characteristics between frequency signals and its uses in measurement

On the basis of phase difference variation characteristics between frequency signals, regularities of periodic signals can be recognized essentially. This paper describes the characteristics with which the greatest common factor frequency, the least common multiple period and quantized minimum varia...

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Main Authors: Wei Zhou, Ping Liang
Format: Conference Proceeding
Language:English
Subjects:
Character recognition
Frequency measurement
Instruments
Marine vehicles
Phase detection
Phase frequency detector
Phase measurement
Signal processing
Time measurement
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Ping Liang
description On the basis of phase difference variation characteristics between frequency signals, regularities of periodic signals can be recognized essentially. This paper describes the characteristics with which the greatest common factor frequency, the least common multiple period and quantized minimum variation of phase difference vary according to the frequency relationship between two signals. It analyses the influence of 'phase coincidences' distribution between signals upon the measurement. According to the characteristics, using the phase coincidence detection method highly accurate measurements of frequency and other periodic signal parameters can be accomplished. A much higher accuracy can be obtained for some special frequency signals. By means of the principle, a lot of new instruments have been built. They show more than 3 to 5 orders accuracy over that of ordinary instruments.< >
doi_str_mv 10.1109/IMTC.1994.351985
format conference_proceeding
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identifier ISBN: 9780780318809
ispartof Conference Proceedings. 10th Anniversary. IMTC/94. Advanced Technologies in I & M. 1994 IEEE Instrumentation and Measurement Technolgy Conference (Cat. No.94CH3424-9), 1994, p.810-816 vol.2
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source IEEE Electronic Library (IEL) Conference Proceedings
subjects Character recognition
Frequency measurement
Instruments
Marine vehicles
Phase detection
Phase frequency detector
Phase measurement
Signal processing
Time measurement
title Phase difference variation characteristics between frequency signals and its uses in measurement
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