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- W126803884 abstract "This article designed a sinusoidal phase modulation (SPM) interferometer for the precision measurement of object displacement. By using low-pass filters to deal with interference signals, the sine and cosine values of phase in the measured object displacement were got. Then the sine and cosine values of phase divided each other, got its arctangent, and processed one-dimensional phase unwrapping to get the measured object displacement. The Interferometer had high measurement accuracy and strong anti-jamming ability; every measurement was the ratio of two values got by two filtering, the effects of the amplitude of interference signal AC component, circuit amplification, the light-intensity of interference signal, and attenuation of filter on the signal and other factors on the measurement results need not be considered. The circuit structure of the Interferometer was designed to be simple." @default.
- W126803884 created "2016-06-24" @default.
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- W126803884 date "2013-01-01" @default.
- W126803884 modified "2023-09-27" @default.
- W126803884 title "Study on Adaptive SPM Displacement Measurement" @default.
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- W126803884 doi "https://doi.org/10.1007/978-1-4471-4856-2_48" @default.
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