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Full-tensor positioning method and full-tensor positioning device for rapidly removing virtual solutions

A positioning method and positioning device technology, applied in the field of magnetic prospecting, can solve the problems such as the cumbersome process of removing virtual solutions of the full tensor magnetic gradient system, and achieve the effect of convenient movement and high system resolution

Active Publication Date: 2021-10-22
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a full tensor positioning method and a full tensor positioning device for quickly removing virtual solutions, which are used to solve the problem of removing virtual solutions in the positioning process of a full tensor magnetic gradient system. cumbersome problem solving

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  • Full-tensor positioning method and full-tensor positioning device for rapidly removing virtual solutions
  • Full-tensor positioning method and full-tensor positioning device for rapidly removing virtual solutions

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Embodiment 1

[0074] This embodiment provides a full tensor positioning method for quickly removing virtual solutions. The full tensor positioning method for quickly removing virtual solutions at least includes:

[0075] Step S1: Gradient measurement is performed to obtain five independent components in the full tensor magnetic gradient matrix G, so as to obtain the complete full tensor magnetic gradient matrix G.

[0076] Specifically, the full tensor magnetic gradient matrix G is a 3*3 matrix, including 9 components, representing the rate of change of the three components of the geomagnetic field in space. Since the main magnetic field gradient of the earth is very small relative to the abnormal magnetic field, the full tensor magnetic gradient matrix G can be regarded as the magnetic field gradient tensor generated by some magnetic anomalous body. In the passive space, the divergence and curl of the magnetic source B are all zero, so only 5 of the 9 components in the full tensor magnetic...

Embodiment 2

[0110] Such as Figure 4 As shown, this embodiment provides a full tensor positioning device for quickly removing virtual solutions, which is used to implement the full tensor positioning method for quickly removing virtual solutions provided in Embodiment 1, and the full tensor positioning method for quickly removing virtual solutions Tensor positioning devices include:

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Abstract

The invention provides a full-tensor positioning method and a full-tensor positioning device for rapidly removing virtual solutions, and the method comprises the steps: carrying out gradient measurement, obtaining five independent components in a full-tensor magnetic gradient matrix, and obtaining a complete full-tensor magnetic gradient matrix; obtaining geomagnetic direction information; obtaining three feature values through calculation, and then obtaining three feature vectors; calculating the cosine value of the included angle between the position vector and the magnetic moment vector in the magnetic source according to the relationship between the magnetic moment vector and the position vector in the magnetic source and the three feature vectors; obtaining four solutions according to the four combinations of the magnetic moment vector and the position vector; acquiring the direction of the magnetic moment vector according to the quadrant of the magnetic moment vector of the magnetic anomaly; and obtaining the position vector corresponding to the magnetic moment, and then removing a virtual solution to obtain a true value. According to the full-tensor positioning device adopting the full-tensor positioning method for rapidly removing the virtual solution, the virtual solution is rapidly removed according to the paramagnetism or diamagnetism of the substance, the magnetic source position information is obtained, the method is simple, and the positioning precision is high.

Description

technical field [0001] The invention relates to the field of magnetic prospecting, in particular to a full tensor positioning method and a full tensor positioning device for quickly removing virtual solutions. Background technique [0002] The full tensor magnetic gradient describes the change rate information of the magnetic field vector in three-dimensional space, that is, the gradient of the three components of the magnetic field vector in three directions in space. The measurement results of the full tensor magnetic gradient have the advantages of being less affected by the magnetization direction, can reflect the vector magnetic moment information of the target body, and can better invert the field source parameters (orientation, magnetic moment, etc.), so it can be used for the field source Carry out positioning and tracking, and improve the resolution of the magnetic source body. The measurement and interpretation application of the full tensor magnetic gradient is r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/38
CPCG01V3/38
Inventor 荣亮亮张典风伍俊
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI