Tilt method aeromagnetic boundary detection method and device based on tensor eigenvalues

A technology of boundary detection and eigenvalue, applied in the field of aeromagnetic survey, can solve problems such as analytic singularity, achieve the effect of enhancing signal-to-noise ratio, avoiding interference, and improving enhancement and extraction capabilities

Active Publication Date: 2022-01-04
中国自然资源航空物探遥感中心
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[0010] The object of the present invention is to provide a Tilt method aeromagnetic boundary detection method and device based on tensor eigenvalues, which can solve the problem of "analytical singularity" in the Tilt method, improve calculation stability, and eliminate the occurrence of false aeromagnetic data geological bodies. boundary disturbance

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  • Tilt method aeromagnetic boundary detection method and device based on tensor eigenvalues

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[0031] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0032] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.

[0033] An embodiment of the present invention provides an aeromagnetic boundary detection method based on the Tilt method of tensor eigenvalues, see figure 1 , which is a flowchart of an aeromagnetic boundary detection method based on the Tilt method based on tensor eigenvalues, including: step S1-step S4.

[0034] Step 1, obtain the full magnetic gradient tensor data matrix M, wherein, the full magnetic gradient tensor da...

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Abstract

The invention discloses a Tilt method aeromagnetic boundary detection method and device based on tensor eigenvalues and a storage medium. The method comprises the steps of acquiring a full magnetic gradient tensor data matrix M; establishing a boundary detection function E and a depth resolution gain factor Mz according to the full magnetic gradient tensor data matrix M; respectively calculating the horizontal gradient Ex of E in the x direction, the horizontal gradient Ey of E in the y direction and the vertical gradient Ez of E in the z direction; calculating a total gradient mode ASM according to the x-direction horizontal gradient Ex, the y-direction horizontal gradient Ey and the z-direction vertical gradient Ez; and according to the z-direction vertical gradient total gradient mode ASM, the depth resolution gain factor Mz and the full magnetic gradient tensor data matrix M, implementing aeromagnetic boundary detection. According to the Tilt method aeromagnetic boundary detection method and device based on tensor eigenvalues and the storage medium provided by the invention, the problem of singular point analysis existing in the Tilt method can be solved, the calculation stability is improved, false interference information is eliminated, the signal-to-noise ratio is enhanced, and the aeromagnetic data processing conversion quality and the geologic body boundary identification effect are improved.

Description

technical field [0001] The invention relates to the technical field of aeromagnetic surveying, in particular to an aeromagnetic boundary detection method and device based on the Tilt method of tensor eigenvalues. Background technique [0002] Airborne magnetic measurement is to install the airborne magnetometer (such as optical pump type, nuclear rotary type and fluxgate type) system on the aircraft, and observe the parameters of the earth's magnetic field (such as the total strength of the earth's magnetic field T or the anomaly of the total magnetic field ΔT or its gradient ), to find magnetic or magnetic-related ore bodies, to understand geological structures, to conduct magnetic mapping, to solve problems of urban and engineering stability, and archaeology. [0003] Airborne magnetic survey data is a comprehensive reflection of the magnetic field information of magnetic geological bodies of different depths, shapes, and scales on the observation plane. However, due to t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/10G06F17/13G06F17/16
CPCG06F17/10G06F17/13G06F17/16
Inventor 王明熊盛青王林飞张加洪屈进红
Owner 中国自然资源航空物探遥感中心
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