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Towed aeromagnetic full-tensor gradient data software compensation method based on forward calculation

A soft compensation, full tensor technology, applied in the field of aeromagnetic soft compensation, can solve the problems of compensation parameter calculation, compensation error, inapplicability, magnetic interference field composition and complex changes, etc.

Inactive Publication Date: 2015-07-29
CHINA UNIV OF GEOSCIENCES (BEIJING)
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Problems solved by technology

In this measurement mode, due to the close distance between the magnetic gradient measurement device and the fuselage, the composition and changes of the magnetic interference field are very complicated.
With the research and development of the aviation full tensor magnetic gradient measurement device, the airborne magnetic measurement method has also been developed to use the helicopter towing measurement. The advantage of this measurement method is that the magnetic gradient measurement device is far away from the fuselage, and the helicopter magnetic interference is reduced. However, Since the relative position between the helicopter and the full tensor magnetic gradient measurement device changes all the time during the flight, the traditional airborne magnetic compensation method is not applicable
In addition, in the past, the helicopter compensation parameters in the towed measurement were mostly obtained by measuring the magnetic field value around the fuselage on the ground, but the magnetic gradient measurement device is located under the fuselage in the actual measurement process, which has problems in the calculation of compensation parameters and compensation. large error

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  • Towed aeromagnetic full-tensor gradient data software compensation method based on forward calculation
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  • Towed aeromagnetic full-tensor gradient data software compensation method based on forward calculation

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[0056] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0057] On the contrary, the invention covers any alternatives, modifications, equivalent methods and schemes within the spirit and scope of the invention as defined by the claims. Further, in order to make the public have a better understanding of the present invention, some specific details are described in detail in the detailed description of the present invention below. The present invention can be fully understood by those skilled in the art without the description of these detailed parts.

[0058] An embodiment of the present invention provides a forward-based towed aeromagnetic full tensor ...

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Abstract

The invention belongs to the field of aeromagnetic software compensation, and particularly relates to a towed aeromagnetic full-tensor gradient data software compensation method based on forward calculation. The towed aeromagnetic full-tensor gradient data software compensation method based on forward calculation is designed by aiming at an aeromagnetic full-tensor gradient towed measuring manner, and has the advantages that, the aeromagnetic full-tensor gradient data software compensation can be performed on the attitudes and relative positions of a helicopter and a nacelle as well as the magnetic field uniform dynamic change condition of the helicopter in the aeromagnetic gradient measuring process, and relative errors are reduced compared with the prior art.

Description

technical field [0001] The invention belongs to the field of aeromagnetic soft compensation, in particular to a drag-type aeromagnetic full tensor gradient data soft compensation method based on forward modeling. Background technique [0002] The main purpose of aeromagnetic soft compensation is to eliminate the influence of the aircraft's own magnetic field (constant field, induction field and eddy current field) and flight attitude changes on the magnetic measurement value in the aeromagnetic measurement. [0003] The traditional aeromagnetic full tensor gradient measurement method mainly adopts the airborne method, and expresses the influence of the aircraft's own magnetic interference field and aircraft attitude changes on the measured value with a set of linear equations. The coefficients of each interference are called compensation coefficients. Obtain the compensation coefficient to eliminate its influence. In this measurement mode, due to the close distance between ...

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Application Information

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IPC IPC(8): G06F19/00
Inventor 修春晓孟小红郭良辉陈召曦张盛王俊张兴东姚长利李淑玲郑元满刘国峰邹韵周俊杰马亚伟刘默
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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