Single distributed optical fiber sensing data recovery method
A technology of distributed optical fiber and sensor data, applied in transmission systems, complex mathematical operations, electromagnetic wave transmission systems, etc., can solve problems such as incomplete mass data, and achieve good flexibility and good effect.
Inactive Publication Date: 2012-11-21
LIREN CHONGDE BEIJING TECH
View PDF1 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0008] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a method of data recovery based on two-dimensional fast curvelet transform and compressed sensing technology, to solve the problem of incomplete mass data collected by distributed optical fiber sensing
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0031] The present invention will be described in further detail below in conjunction with examples and accompanying drawings, but the embodiments of the present invention are not limited thereto.
[0032] like figure 2 Therefore, the data recovery method based on two-dimensional fast curvelet transform and compressed sensing technology includes the following steps:
[0033] Step 1: Build a data decomposition module using the two-dimensional fast curvelet forward transform. The present invention adopts Wrap algorithm to realize two-dimensional fast discrete curvelet transform, and its specific realization can be divided into following steps: (1) obtain Fourier coefficient through two-dimensional fast Fourier transform FFT of input signal; (2) for each Scale and direction parameter groups, multiplied by the Fourier coefficient by the parabolic window, so as to achieve the localization of the Fourier domain; (3) the localized Fourier coefficient around the origin Wrap; (4) the...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention belongs to the technical field of distributed optical fiber sensing data recovery, aims at the application of long-distance transportation and monitoring of an oil and gas pipeline and utilizes a single optical fiber to acquire physical quantities such as the temperature, the stress and the like. The invention relates to various technologies of mass data processing, high performance calculation, distributed optical fiber sensing signal acquisition and the like and solves the problem of data incompleteness caused by damage to part of sensing elements of the optical fiber. A single distributed optical fiber sensing data recovery method is characterized in that a high performance calculation platform is used as the hardware basis; a data recovery system is constructed by utilizing a two-dimensional rapid wave change and compressive sensing technology; and input data of the system is a two-dimensional sensing signal calibrated by position (x) and time (t) coordinates. The architecture of the system comprises the following main modules: a wave forward transformation module, a coefficient extraction module, a threshold value processing module, a wave inverse transformation module and a target function minimization iterative processing module on the basis of 1 norm. Experiments prove that the utilization of the high redundancy of the wave change provides more utilizable information for recovery of missed trace data which is randomly distributed.
Description
technical field [0001] The invention relates to the technical field of single distributed optical fiber sensing data recovery, in particular to a data recovery method based on two-dimensional fast curve wave change and compressed sensing technology. Invented for the application of long-distance transportation monitoring of oil and gas pipelines. Background technique [0002] Distributed optical fiber sensing technology has the ability to simultaneously acquire the measured distribution information that changes with time and space in the sensing fiber area. Its basic features are: the sensitive sensing element in the distributed optical fiber sensing system is only the optical fiber itself; a single measurement of a single optical fiber can obtain the one-dimensional distribution map of the measured object in the entire optical fiber area, and multiple measurements in continuous time can determine the measured object. The two-dimensional distribution of the measurement; for ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/12G06F17/14
Inventor SHAO YU
Owner LIREN CHONGDE BEIJING TECH