一种电性异常体瞬变电磁三维定位方法

By transforming and directly calculating the transient electromagnetic three-component response data, the spatial location of the electrical anomaly can be directly determined, solving the problems of insufficient three-dimensional positioning accuracy and low computational efficiency of electrical anomalies in the existing technology, and realizing high-precision and unique three-dimensional positioning of electrical anomalies.

CN122018016BActive Publication Date: 2026-07-17INST OF GEOPHYSICAL & GEOCHEMICAL EXPLORATION CHINESE ACAD OF GEOLOGICAL SCI

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF GEOPHYSICAL & GEOCHEMICAL EXPLORATION CHINESE ACAD OF GEOLOGICAL SCI
Filing Date
2026-04-15
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing transient electromagnetic detection technologies suffer from insufficient three-dimensional positioning accuracy of electrical anomalies, multiple solutions in inversion interpretation, and low computational efficiency, making it difficult to achieve accurate and unique spatial positioning of underground electrical anomalies.

Method used

By collecting transient electromagnetic three-component response data, constructing a transformation matrix T to transform the data, calculating the pointing vector Cij, drawing positioning line segments and picking intersection points, the spatial location of the electrical anomaly can be directly determined, avoiding the iterative inversion process.

Benefits of technology

It improves the accuracy and reliability of three-dimensional localization of electrical anomalies, enhances the uniqueness of localization results, significantly improves computational efficiency, and avoids problems of multiple solutions and dependence on the initial model.

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Abstract

本发明涉及电磁探测技术领域,具体为一种电性异常体瞬变电磁三维定位方法,该方法包括:按探测需求获取各测点的瞬变电磁三分量响应数据;采用构造的变换矩阵对所有测点的数据进行矩阵变换,得到变换后的瞬变电磁响应数据;基于变换后的瞬变电磁响应数据,计算各测点在各时间道的指向向量;基于各测点的坐标及其对应的指向向量,计算各测点在各时间道的定位线段;选取某一时间道,绘制全部测点的定位线段,拾取定位线段的交点以确定电性异常体的空间位置。本发明通过对瞬变电磁三分量响应数据进行变换处理并直接计算定位线段,不依赖迭代反演即可确定电性异常体的三维空间位置,有效提升了定位精度与定位结果的唯一性,提高了计算效率。
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