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Method for calculating two-dimensional body gravity anomaly

A technology of gravity anomaly and calculation method, applied in the direction of calculation, special data processing application, instrument, etc., can solve the problem of inability to meet the requirements of large-scale gravity anomaly density fine inversion imaging, human-computer interaction modeling and interpretation, and can not guarantee the calculation efficiency at the same time. and calculation accuracy, to achieve the effect of simple representation and high-precision calculation

Active Publication Date: 2017-06-16
GUILIN UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0006] The present invention aims at the problem that the existing two-degree gravity anomaly calculation method cannot guarantee the calculation efficiency and calculation accuracy at the same time, and cannot meet the needs of large-scale gravity anomaly density fine inversion imaging, human-computer interaction modeling and interpretation. The purpose of the present invention is to A calculation method for second-degree gravity anomalies is proposed, which is a fast and high-precision calculation method for second-degree gravity anomalies with arbitrary cross-sectional shapes and arbitrary density distributions

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  • Method for calculating two-dimensional body gravity anomaly
  • Method for calculating two-dimensional body gravity anomaly
  • Method for calculating two-dimensional body gravity anomaly

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[0056] 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.

[0057] refer to figure 1 , which is a flow chart of a method for calculating a second-degree body weight abnormality in this embodiment, including the following steps:

[0058] 1. Complex two-dimensional body model representation:

[0059] First, determine the observation point, the observation point coordinates (x m ,z 0 ), establish a regular rectangular model containing all target areas based on the observation points, determine the starting position of the rectangular model in the x, z directions, so that the target area (including undulating terrain) is completely embedded in the rectangular model;

[0060] Secondly, according to the actual problem requirements, that is, according to the predetermined number of small rectangles...

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Abstract

The invention provides a method for calculating two-dimensional body gravity anomaly. According to the method, complex two-dimensional body model representation and rectangular model gravity anomaly calculation steps are implemented, wherein the rectangular model gravity anomaly calculation comprises the steps of weighting coefficient calculation, one-dimensional discrete convolution calculation and gravity anomaly synthesis. According to the method, unity of gravity anomaly in efficiency and precision is implemented. According to the method, problems that an existing two-dimensional body gravity anomaly calculation method cannot ensure calculation efficiency and calculation precision simultaneously and requirements of large-scale gravity anomaly data density detailed inversion and human-computer interaction modeling and explanation cannot be met are solved.

Description

technical field [0001] The invention relates to a calculation method for second-degree gravity anomalies, in particular to a fast and high-precision calculation method for second-degree gravity anomalies with arbitrary cross-sectional shapes and arbitrary density distributions. Background technique [0002] Gravity prospecting is based on the earth's gravity field and density difference as the physical basis. It is a geophysical prospecting method for studying the earth's structure and searching for mineral resources. Multiple conditional restrictions. The forward calculation of gravity anomaly refers to the calculation of gravity anomaly based on the density distribution, and the inversion refers to the calculation of the density distribution based on the observed gravity value. Forward modeling is the basis of inversion, the efficiency of forward modeling directly affects the efficiency of inversion calculation, and the accuracy of forward modeling directly affects the qu...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/367
Inventor 陈龙伟熊彬陈欣罗天涯
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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