SIGNAL PROCESSING APPARATUS, SIGNAL PROCESSING METHOD, AND NON-TRANSITORY COMPUTER READABLE MEDIUM
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United States of America
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Issued Date -
Apr 10, 2025
app pub date -
Mar 31, 2022
filing date -
Mar 31, 2022
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Abstract
Provided is a signal processing apparatus including: an acquisition unit configured to acquire a phase difference signal of backscattered light of laser light, by an optical fiber sensor configured to convert dynamic distortion of an optical fiber, at a first gauge length that is a predetermined section, into a phase difference of the backscattered light of the laser light passing through the first gauge length; and a control unit configured to perform signal processing to obtain phase difference data of the backscattered light of the laser light at a second gauge length shorter than the first gauge length, from the acquired phase difference signal of the backscattered light of the laser light.
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