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Flight disturbing magnetic field compensation method based on Tikhonov regularization

A technology of interference magnetic field and compensation method, which is applied in electric/magnetic exploration, re-radiation of sound waves, design optimization/simulation, etc. It can solve the problems of the influence of the ridge estimation solution effect and the low solution accuracy of the carrier interference magnetic field model, so as to achieve compensation Good effect and high precision effect

Inactive Publication Date: 2018-09-11
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0004] At present, the ridge estimation is often used to overcome the ill-conditioned coefficient matrix to a certain extent, but in actual detection, the electrical equipment (relays, motors, etc.) The estimated solution effect has a great influence, so that the solution accuracy of the carrier interference magnetic field model parameters is generally low

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  • Flight disturbing magnetic field compensation method based on Tikhonov regularization
  • Flight disturbing magnetic field compensation method based on Tikhonov regularization
  • Flight disturbing magnetic field compensation method based on Tikhonov regularization

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Embodiment Construction

[0036] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0037] A kind of carrier disturbance magnetic field compensation method based on Tikhonov regularization of the present invention adopts the principle as follows:

[0038] In the process of magnetic anomaly detection, the total magnetic field data measured by the airborne magnetometer is an N×1 column vector H a , the actual geomagnetic field data is N×1 column vector H e , and the carrier disturbance magnetic field is an N×1 column vector ΔH, namely:

[0039] h a =H e +ΔH (1)

[0040] Among them, H a It can be directly measured by the airborne magnetometer;

[0041] The ultimate goal of carrier disturbance magnetic field compensation is to determine H e , it can be seen from the above formula that as long as ΔH is calculated and derived from the total magnetic field H a Subtracting from , we can get H e .

[0042] Combined with the aircraft carrie...

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Abstract

The invention discloses a flight disturbing magnetic field compensation method based on Tikhonov regularization. According to the method, by conducting singular value decomposition on a coefficient solution matrix K and considering the existence of random disturbing magnetic fields unrelated to changes of flight postures in the real environment, the method, compared with ridge estimation, has theadvantages that more specific information of the coefficient solution matrix is obtained, the coefficient solution precision is higher, and the compensation effect is better.

Description

technical field [0001] The invention belongs to the technical field of geospatial physics science and magnetic anomaly detection, and in particular relates to an aircraft interference magnetic field compensation method based on Tychonoff regularization. Background technique [0002] Magnetic anomaly detection is an important means of aerogeophysical prospecting, widely used in the field of geophysics. Since the magnetic anomaly detection needs to fix the magnetometer on the aircraft, the interference magnetic field of the aircraft itself will seriously affect the measurement of the magnetometer, so it is of great engineering value to effectively compensate the interference magnetic field caused by the aircraft. [0003] The carrier disturbance magnetic field compensation technology is a technology to remove the magnetic interference of the aircraft carrier itself in the process of magnetic anomaly detection. By analyzing the type and nature of the magnetic interference of t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G01V3/165G01V3/38
CPCG01V3/165G01V3/38G06F30/20
Inventor 付梦印李杰刘彤王美玲吴泰霖王凯
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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