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Airborne motion platform magnetic disturbance compensation method without influence of geomagnetic variation

A motion platform and compensation method technology, applied in the field of aeromagnetic detection, can solve problems such as failure of aeromagnetic interference compensation coefficients

Active Publication Date: 2016-04-20
哈尔滨工业大学人工智能研究院有限公司
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AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problem of failure of the aeromagnetic interference compensation coefficient caused by the change of the geomagnetic field, the present invention provides a magnetic interference compensation method for the aeronautical motion platform that is not affected by the change of the geomagnetic field. Interference compensation coefficient, and applied to eliminate magnetic interference generated by aeronautical platforms during aeromagnetic detection

Method used

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  • Airborne motion platform magnetic disturbance compensation method without influence of geomagnetic variation
  • Airborne motion platform magnetic disturbance compensation method without influence of geomagnetic variation
  • Airborne motion platform magnetic disturbance compensation method without influence of geomagnetic variation

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specific Embodiment approach 1

[0091] Specific Embodiment 1: A magnetic interference compensation method for an aeronautical motion platform that is not affected by geomagnetic changes in this embodiment is implemented according to the following steps: figure 1 :

[0092] Step 1, collecting the total magnetic field data to obtain the geomagnetic field;

[0093] Step 2, using the obtained geomagnetic field to obtain a compensation coefficient φ independent of the geomagnetic field;

[0094] Step 3, use the compensation coefficient irrelevant to the geomagnetic field to obtain the magnetic interference compensation result res=H generated by the aviation motion platform total -Ht, where H Total is the total magnetic field, H t for magnetic interference.

specific Embodiment approach 2

[0095] Embodiment 2: This embodiment is different from Embodiment 1, and it is characterized in that the total magnetic field data in Step 1 is collected by a total field magnetometer and a three-component magnetometer.

specific Embodiment approach 3

[0096] Specific embodiment three: present embodiment is different from specific embodiment one or two, and it is characterized in that described step 1 gathers total magnetic field data, obtains geomagnetic field data as follows:

[0097] The total magnetic field measured by the total field magnetometer is H Total , which mainly includes the geomagnetic field He and the three kinds of magnetic disturbance Ht generated by the aircraft motion platform, specifically including the constant field H per , induction field H induce and eddy current field H eddy ,As follows:

[0098] Ht=H per +H induce +H eddy (10)

[0099] in, H p e r = p 1 p 2 p 3 ...

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Abstract

The invention relates to an airborne motion platform magnetic disturbance compensation method without influence of geomagnetic variation and belongs to the field of aeromagnetic detection. According to the invention, the failure problem of aeromagnetic disturbance compensation factor due to variation of geomagnetic field in the prior art is solved. The method of the invention comprises the following steps: Step 1, acquiring data of magnetic total field to obtain geomagnetic field; Step 2, obtaining compensation factor phi unrelated to the geomagnetic field by the utilization of the obtained geomagnetic field; and Step 3, obtaining magnetic disturbance compensation result res=Htotal-Ht generated by an airborne motion platform by the utilization of the compensation factor phi unrelated to the geomagnetic field. The method of the invention is applied in eliminating magnetic disturbance generated by the airborne motion platform during aeromagnetic detection. By the method, solving precision of compensation factor estimation algorithm is raised.

Description

technical field [0001] The invention relates to the field of aeromagnetic detection, in particular to a magnetic interference compensation method for an aeronautical motion platform that is not affected by geomagnetic changes. Background technique [0002] The magnetic field measured by the magnetometer installed on the aerial platform is the superposition of the geomagnetic field and the magnetic interference generated by the aerial platform. The magnetic interference generated by the aerial platform must be eliminated to obtain an effective magnetic field signal. Aeromagnetic interference compensation is a technology to eliminate the magnetic interference generated by the aerial platform in the process of aeromagnetic detection. By analyzing the type and nature of the magnetic interference of the aviation motion platform itself, the mathematical model of the aeromagnetic interference is established, and then the total magnetic field and its three-component data are measure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/08G01C21/20
CPCG01C21/08G01C21/20
Inventor 韩琦赵冠一窦振家李琼王莘牛夏牧
Owner 哈尔滨工业大学人工智能研究院有限公司
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