Title:
METHOD FOR PROCESSING LONG-DISTANCE OPTICAL FIBER DISTRIBUTED DISTURBANCE SENSING SIGNAL BASED ON OPTICAL FREQUENCY DOMAIN REFLECTION
Document Type and Number:
WIPO Patent Application WO/2019/019735
Kind Code:
A1
Abstract:
Disclosed is a method for processing a long-distance optical fiber distributed disturbance sensing signal based on optical frequency domain reflection. The method comprises the following steps: S1, using an image processing method to carry out noise reduction enhanced feature processing on a measurement signal; and S2, using a noise reduction method without a spatial resolution loss and using low-pass filter noise reduction to make a disturbance position more obvious and prominent where a spatial resolution is ensured, so as to distinguish multi-point disturbance. The method for processing a long-distance optical fiber distributed disturbance sensing signal based on optical frequency domain reflection uses an image processing method to effectively reduce noise and retain disturbance feature information. During multi-point disturbance distinguishing, a noise reduction method without a spatial resolution loss and low-pass filter noise reduction are used to make a disturbance position more obvious and prominent where a spatial resolution is ensured.
Inventors:
LIU KE (CN)
Application Number:
PCT/CN2018/084568
Publication Date:
January 31, 2019
Filing Date:
April 26, 2018
Export Citation:
Assignee:
TIANJIN QIUSHI FIBER TECH CO LTD (CN)
International Classes:
G01D5/353
Foreign References:
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Attorney, Agent or Firm:
BEI & OCEAN (CN)
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