Method for suppressing surge noise of seismic data, storage medium and equipment
A seismic data and noise technology, applied in the field of seismic exploration data processing, can solve problems such as noise cannot be suppressed, iterative initial value is difficult to select, and filter window changes, achieving strong adaptability and small damage effects
Active Publication Date: 2020-09-22
XI AN JIAOTONG UNIV
View PDF9 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0007] 1. The selection of the filter window of the median filtering method cannot change with the noise, and the effective signal will be lost or the noise cannot be suppressed.
[0008] 2. It is difficult to select the initial value of the iteration, and the selection of different initial values will greatly affect the suppression effect of surge noise
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
[0065] The present invention provides a robust sparse representation method for correlative entropy induced metric for suppressing seismic data surge noise. Firstly, the high-pass filter is used to filter part of the surge noise without losing the effective signal in the seismic data. In the high-frequency part of the filter, the fixed transformation base of the curvelet transform is used to sparsely represent the effective signal, and at the same time, the correlation entropy induction metric is used to adaptively assign a smaller weight to the high-amplitude surge noise, so that the surge noise Suppress to get the final effective signal.
[0066] see Figure 9 , the present invention suppresses the correlative entropy induced metric robust sparse representation method of surge noise of seismic data, comprises the following steps:
[0067] S1. Read the original seismic data and perform high-pass filtering on it; filter out part of the low-frequency surge noise without losing...
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 discloses a method for suppressing surge noise of seismic data, a storage medium and equipment, and the method comprises the steps: reading original seismic data, and carrying out the high-pass filtering of the original seismic data; filtering part of low-frequency surge noise under the condition that effective signals of seismic data are not lost; selecting a fixed sparse transformation base according to the characteristics of effective signals in the original seismic data; for high-frequency components obtained through filtering, constructing an alternate iterative optimizationmethod based on a semi-quadratic optimization technology and a linearized Bregman method, and obtaining sparse representation of seismic data effective signals under a sparse transformation basis while surge noise is suppressed; and finishing suppressing the surge noise in the original seismic data. According to the correlation entropy induction measurement robust sparse representation method forsuppressing the surge noise of the seismic data, the high-amplitude surge noise can be effectively suppressed, and the signal-to-noise ratio of the seismic data is improved.
Description
technical field [0001] The invention belongs to the technical field of seismic exploration data processing, and in particular relates to a robust sparse representation method, storage medium and equipment for correlative entropy induced metric for suppressing surge noise of seismic data. Background technique [0002] According to the characteristics of noise appearing on the seismic section, it can be divided into random noise and correlated noise. During the imaging process of seismic data, the reflected signal received by the geophone contains a large amount of random noise. The existence of random noise directly affects the continuity of the event of the time section of seismic data, which greatly increases the difficulty of seismic data interpretation. In order to meet the current requirements of seismic resource exploration, the primary task of seismic data processing is to suppress random noise and improve the signal-to-noise ratio of seismic data. [0003] Surge noi...
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): G01V1/36G01V1/28
CPCG01V1/282G01V1/36G01V1/362G01V1/364G01V2210/20G01V2210/30
Inventor 陈文超徐威威周艳辉王晓凯
Owner XI AN JIAOTONG UNIV