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Transient electromagnetic signal processing method and device for geological exploration and storage medium

A transient electromagnetic and signal processing technology, applied in the field of signal processing, to achieve the effect of improving the signal-to-noise ratio, simple algorithm model, and less computation.

Pending Publication Date: 2021-06-15
西双版纳景海高速公路建设投资有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, it is necessary to provide a transient electromagnetic signal processing method, device and storage medium for geological exploration to solve the problem of how to efficiently expand the secondary field signal

Method used

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  • Transient electromagnetic signal processing method and device for geological exploration and storage medium
  • Transient electromagnetic signal processing method and device for geological exploration and storage medium
  • Transient electromagnetic signal processing method and device for geological exploration and storage medium

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Embodiment 1

[0051] An embodiment of the present invention provides a transient electromagnetic signal processing method for geological exploration, combining figure 1 look, figure 1 It is a schematic flow chart of the transient electromagnetic signal processing method for geological exploration provided by the present invention. The above-mentioned transient electromagnetic signal processing method for geological exploration includes steps S1 to S5, wherein:

[0052] In step S1, a transient electromagnetic signal is acquired;

[0053] In step S2, according to the segmental processing of the transient electromagnetic signal, determine the corresponding partial signal of the secondary field;

[0054] In step S3, according to the linearity of the partial signal of the secondary field, the corresponding ideal data segment of the secondary field is selected;

[0055] In step S4, linear fitting is carried out to the ideal data segment of the quadratic field under logarithmic coordinates;

[...

Embodiment 2

[0087] An embodiment of the present invention provides a transient electromagnetic signal processing device, combined with Figure 9 look, Figure 9 It is a schematic structural diagram of the transient electromagnetic signal processing device provided by the present invention, the above transient electromagnetic signal processing device 900 includes:

[0088] an acquisition unit 901, configured to acquire a transient electromagnetic signal;

[0089]The processing unit 902 is used to determine the corresponding partial signal of the secondary field according to the segmentation processing of the transient electromagnetic signal; it is also used to select the ideal data segment of the corresponding secondary field according to the linearity of the partial signal of the secondary field; In the logarithmic coordinates, the ideal data segment of the quadratic field is linearly fitted;

[0090] The extension unit 903 is configured to determine the extended late signal of the part...

Embodiment 3

[0092] An embodiment of the present invention provides a transient electromagnetic signal processing device, including a processor and a memory, and a computer program is stored in the memory. When the computer program is executed by the processor, the above-mentioned transient electromagnetic signal processing method for geological exploration is realized. .

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Abstract

The invention relates to a transient electromagnetic signal processing method and device for geological exploration and a storage medium. The method comprises the following steps of: acquiring transient electromagnetic signals; according to segmentation processing of the transient electromagnetic signals, determining corresponding secondary field part signals; selecting corresponding secondary field ideal data segments according to the linearity of the secondary field part signals; carrying out linear fitting on the secondary field ideal data segments under logarithmic coordinates; and according to the linear fitting result of the secondary field ideal data segments, determining extended late signals of the secondary field part signals, and the time starting point of the extended late signals being consistent with the time end point of the secondary field part signals. According to the transient electromagnetic signal processing method and device for geological exploration and the storage medium, in the inversion process of the transient electromagnetic method, data of a secondary field are mainly adopted for analysis, linear fitting is carried out on an ideal section of the secondary field signals under the logarithmic coordinates, the signal-to-noise ratio of the signals can be greatly improved when the late signals are interfered or the signals are weak, the algorithm model is simple, the calculation amount is small, and calculation can be completed quickly.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to a transient electromagnetic signal processing method, device and storage medium for geological exploration. Background technique [0002] The transient electromagnetic method is a time-domain electromagnetic method that uses an ungrounded loop to transmit a pulsed electromagnetic field underground, and uses a coil to observe the spatial and temporal distribution of the electromagnetic field generated by the underground eddy current induced by the pulsed electromagnetic field, thereby solving geological problems. . The induced electromagnetic field (primary field) in the transition process generated in the underground medium produces a structure and frequency in the conductive medium. The vortex alternating electromagnetic field that changes continuously in time and space is the secondary field. The strength and direction of the secondary field , distribution law, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/38G01V3/10
CPCG01V3/38G01V3/10Y02A90/30
Inventor 杨建成李建国茶增云赵泽远梁艳峰王云龙沈孟龙汤华吴振君尹小涛邓琴宋罡
Owner 西双版纳景海高速公路建设投资有限公司
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