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Method of locating magnetic target based on tri-axial vector magnetic sensor array

A magnetic sensor and magnetic target technology, applied in the field of magnetic measurement, can solve problems such as large positioning errors, complex calculations, and unstable solution results

Inactive Publication Date: 2013-02-13
710TH RES INST OF CHINA SHIPBUILDING IND CORP
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Problems solved by technology

[0004] The above-mentioned traditional magnetic positioning method has the disadvantages of large amount of data, complicated calculation, unstable solution results, poor real-time performance, and large positioning error.

Method used

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  • Method of locating magnetic target based on tri-axial vector magnetic sensor array
  • Method of locating magnetic target based on tri-axial vector magnetic sensor array
  • Method of locating magnetic target based on tri-axial vector magnetic sensor array

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Embodiment Construction

[0028] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0029] This embodiment provides a method for locating a magnetic target based on a three-axis vector magnetic sensor array. The method utilizes a magnetic gradient tensor measurement array composed of five three-axis vector magnetic sensors to locate the magnetic target.

[0030] The layout of the magnetic gradient tensor measurement array is as follows figure 1 As shown, the numbers of the five three-axis vector magnetic sensors are set to be No. 1 to No. 5 respectively. The No. 1 three-axis vector magnetic sensor arranged at the detection point is used as the reference sensor, and the other three-axis vector magnetic sensors are used as reference sensors. Let the three sensitive axes of the reference sensor be the x direction, the y direction and the z direction respectively, establish a coordinate system xyz, and the three sensitive axes corresponding ...

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Abstract

The invention discloses a method of locating a magnetic target based on a tri-axial vector magnetic sensor array. According to the method, the magnetic target is located by a magnetic gradient tensor measuring array formed by five tri-axial vector magnetic sensors at high locating precision. The specific scheme of the method comprises the following steps of: at first, measuring the magnetic gradient tensor of any point on the periphery of the magnetic target by utilizing the magnetic gradient tensor measuring array; secondly, resolving a relative distance between the magnetic target and the magnetic measuring array and relative coordinates by utilizing the magnetic tensor; and at last, locating the magnetic target according to the resolved relative distance and the relative position coordinates. The locating method has the advantages of simplicity, practicability and high locating precision.

Description

technical field [0001] The invention relates to a high-precision magnetic target positioning method, in particular to a magnetic target positioning method based on a three-axis vector magnetic sensor array, and belongs to the field of magnetic measurement. Background technique [0002] Magnetic detection technology is widely used in navigation and positioning, geological exploration, biomedicine, shipwreck salvage and other fields. Magnetic positioning technology is one of the core technologies of magnetic detection technology. [0003] At present, the most commonly used magnetic positioning method is to derive the corresponding positioning formula according to the established magnetic target magnetic field model, and then solve the positioning according to the measured magnetic field value. This is actually an inversion process, which involves solving nonlinear equations. Common solving methods include neural network method, successive regression method, genetic algorithm ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/00G01V3/08
Inventor 卢俊杰陈正想李伟石超王秀
Owner 710TH RES INST OF CHINA SHIPBUILDING IND CORP
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