A Magnetic Target Location Method Based on Carrier Compensation

A magnetic target and positioning method technology, applied in navigation calculation tools, ground navigation, etc., can solve the problems of complex sensor installation, etc., and achieve the effect of simple implementation, high positioning accuracy and long positioning distance

Active Publication Date: 2019-07-16
HARBIN ENG UNIV
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  • Abstract
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Problems solved by technology

In the process of using the vector sensor for measurement, the installation of the sensor is very complicated, and the attitude and orientation must be strictly corrected during installation

Method used

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  • A Magnetic Target Location Method Based on Carrier Compensation
  • A Magnetic Target Location Method Based on Carrier Compensation
  • A Magnetic Target Location Method Based on Carrier Compensation

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Embodiment Construction

[0045]The present invention will be further described below in conjunction with the accompanying drawings.

[0046] A magnetic target positioning method based on carrier compensation, constructed as figure 1 In the scalar sensor array shown, the information of the magnetic field strength is recorded by four scalar sensors, and the functional relationship between the scalar sensors when measuring the magnetic field strength is obtained, which can eliminate the influence of the carrier in the target positioning and obtain the corresponding magnetic anomaly, so as to realize Three-dimensional tracking and positioning of magnetic targets.

[0047] The present invention adopts figure 1 The function of multiple scalar sensor output values ​​in the array shown compensates for carrier disturbances. The four scalar sensors record the information of the magnetic field strength, use the linear regression method to determine the functional relationship between the scalar sensors when me...

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Abstract

The invention belongs to the field of magnetic field measuring, and more specifically relates to a magnetic object positioning method based on carrier compensation. The magnetic object positioning method comprises following steps: four magnetic sensors are used for constructing a magnetometer array on water surface or under water; in the absence of magnetic objects, magnetic field intensity values changing with time are measured using magnetometers and are recorded, autoregression analysis of the magnetic field intensity values with the values recorded by one of the magnetometers is carried out so as to obtain the linear relationship of the measuring values; the magnetic sensors in the array are used for measuring magnetic anomaly induced by magnetic objects; and a magnetic doublet model is constructed, and the magnetic fields generated by the magnetic objects at measuring points are obtained. The magnetic object positioning method based on carrier compensation is capable of eliminating influences of carriers on the magnetometers, and increasing accuracy of magnetic object positioning; and in addition, geomagnetism information measured by the scalar sensors is rotational invariant, is irrelevant to the arrangement and position of the sensor array, so that implementation of the magnetic object positioning method is simple, positioning accuracy is high, and positioning distance is long.

Description

technical field [0001] The invention belongs to the field of magnetic field measurement, and in particular relates to a magnetic target positioning method based on carrier compensation. Background technique [0002] The geomagnetic field is one of the important physical quantities that reflect the evolution of the universe, the evolution of the earth, the evolution of geological structures, and seismic activity. The research results of the geomagnetic field have extensive and important applications in the fields of navigation, aviation, aerospace, energy, minerals, security, archaeology, etc. [2,3] . [0003] The invention relates to a magnetic target positioning method based on carrier compensation. Specifically, a sensor array composed of four scalar magnetometers is constructed, and the data measured by the sensors are analyzed by autoregression to obtain the linear relationship between the measured values ​​of different magnetometers, thereby eliminating the influence ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/08G01C21/20
CPCG01C21/08G01C21/20
Inventor 康崇郑权樊黎明周健张晓峻王明
Owner HARBIN ENG UNIV
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