Quick and high-precision numerical simulation method for two-dimensional magnetic field of strong magnetic body

A numerical simulation and strong magnetic technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of inability to meet the fine inversion imaging of large-scale strong magnetic measurement data, low calculation accuracy, and long calculation time

Inactive Publication Date: 2018-06-22
CENT SOUTH UNIV
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Problems solved by technology

[0007] The purpose of the present invention is to provide a fast and high-precision numerical simulation calculation method for the magnetic field of a two-dimensional strong magnetic body. The problem of fine inversion imag

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  • Quick and high-precision numerical simulation method for two-dimensional magnetic field of strong magnetic body
  • Quick and high-precision numerical simulation method for two-dimensional magnetic field of strong magnetic body
  • Quick and high-precision numerical simulation method for two-dimensional magnetic field of strong magnetic body

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Embodiment Construction

[0088] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0089] Such as figure 1 as shown, figure 1 It is a flowchart of a fast and high-precision numerical simulation calculation method for the magnetic field of a two-dimensional strong magnetic body in the present invention. The present invention comprises the following steps:

[0090] Step 1: Two-dimensional strong magnetic body model representation:

[0091] Such as figure 2 as shown, figure 2 It is a schematic diagram of a two-dimensional ferromagnetic body model. The magnetic field of two-dimensional ferromagnetic body is exactly two-dimensional ferromagnetic body (namely figure 2The abnormal body in ), the area where the abnormal body is located is called the abnormal area.

[0092] First, the target area and the two-dimensi...

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Abstract

The invention provides a quick and high-precision numerical simulation method for a two-dimensional magnetic field of a strong magnetic body. According to the method, through two-dimensional model expression of the strong magnetic body, Gaussian parameter design, calculation of the discrete offset wave number, weighting coefficient calculation of a wave number domain, calculation of magnetizationintensity, one-dimensional discrete Fourier inversion, magnetic abnormality calculation of a spatial domain, iteration convergence judgement and other steps, unification on efficiency and precision ofnumerical simulation of the two-dimensional magnetic field of the strong magnetic body is achieved. According to the method, the problems are solved that an existing numerical simulation method for the magnetic field of the strong magnetic body is low in calculation precision and cannot meet fine inversion imaging of large-scale strong magnetic measurement data, and the method helps to carry outresearch of two-dimensional magnetic susceptibility fine inversion imaging of the large-scale strong magnetic measurement data, man-machine interaction modeling and interpretation.

Description

technical field [0001] The invention relates to a numerical simulation method for airborne magnetic prospecting, in particular to a high-efficiency and high-precision numerical simulation method for two-dimensional strong magnetic body magnetic prospecting. Background technique [0002] Magnetic method is an important means of mineral resource exploration and one of the main methods to find some metal ores. Today's high-precision magnetometers, such as proton magnetometers and optical pump magnetometers, have sensitivities of 0.01nT and 0.001nT respectively. Therefore, the corresponding high-precision processing conversion and inversion interpretation are gradually paid attention to. However, most minerals have high magnetic susceptibility, which brings great difficulties in the processing and interpretation of magnetic survey data. If the influence of the strong magnetic effect is not considered, it will inevitably cause errors in the calculation results and seriously aff...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 李昆陈龙伟陈轻蕊强建科戴世坤张钱江赵东东
Owner CENT SOUTH UNIV
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