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A three-axis fluxgate aeromagnetic measurement system and correction and compensation method

A technology of measurement system and compensation method, which is applied in the direction of radio wave measurement system, measurement device, geophysical measurement, etc., can solve the problem that the total field data of the three-axis fluxgate cannot be used directly, and achieve easy portability and field work without The effect of ground interference and easy disassembly and assembly

Active Publication Date: 2021-06-04
加泰科(深圳)科技有限公司
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Problems solved by technology

If the magnetic interference of the drone body and other systems is superimposed, the total field data of the three-axis fluxgate cannot be directly used in the geomagnetic effective mapping operation after the aeromagnetic survey

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  • A three-axis fluxgate aeromagnetic measurement system and correction and compensation method
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  • A three-axis fluxgate aeromagnetic measurement system and correction and compensation method

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Embodiment Construction

[0077] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0078] Figure 1-11 One embodiment of the invention is shown schematically.

[0079] The system includes two major functional parts, the vertical take-off and landing fixed-wing UAV and the aeromagnetic measurement system (Fig. 1). The aeromagnetic measurement system includes an analog three-axis fluxgate magnetometer, GPS antenna and receiver, nine-axis inertial measurement unit, data acquisition and correction compensation device, wireless or wired data real-time transmission module, data storage U disk and the installation of the above devices In the mission compartment of the vertical take-off and landing fixed-wing UAV, and the computer ground station system for calculating the correction compensation parameters and collecting and processing data.

[0080] The three-axis fluxgate magnetometer data acquisition and correction compensation algorithm and i...

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Abstract

The invention discloses a three-axis fluxgate aeromagnetic measurement system and a correction and compensation method based on a vertical take-off and landing fixed-wing aircraft. A series of three-axis fluxgate digital output readings generated with attitude changes during flight are collected in advance as numerical values. Input, solve nonlinear least squares equations, obtain 12 compensation parameters that have a common influence on the three-axis fluxgate magnetometer, store the obtained compensation parameters in the multi-data synchronous acquisition and correction compensation system, and use the compensation algorithm to correct The aeromagnetic flight working survey line obtains vector magnetic field and total field data for real-time and post-flight correction and compensation. The invention does not need the optical pump magnetometer to obtain the data of the total field strength of the magnetic field after compensation and correction. It is suitable for light and small unmanned aerial vehicles platforms. The magnetometer is integrated in the mission compartment of the unmanned aerial vehicle. The advanced compensation algorithm greatly improves the accuracy of the three-axis vector high-precision magnetometer and greatly reduces the system noise.

Description

technical field [0001] The present invention relates to an unmanned aerial vehicle geophysical detection technology, in particular to a magnetic exploration or detection technology field. Background technique [0002] At present, the main commercial magnetometers on the market include fluxgate magnetometer, proton magnetometer, Overhauser magnetometer, optical pump magnetometer and superconducting quantum interference magnetometer. Restricted by many factors such as detection principle, probe material, volume, weight, sampling rate, price, etc., commercial airborne magnetic survey is mainly based on optical pump magnetometer, supplemented by fluxgate magnetometer as compensation or three-component measurement. [0003] Airborne magnetic survey was first used by the navy to detect magnetic anomalies caused by submarines, and later used in civilian aerophysical surveys. In the field of physical exploration, aeromagnetic surveying has the characteristics of fast speed, high pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V3/40G01V3/38
CPCG01V3/38G01V3/40
Inventor 卿昊
Owner 加泰科(深圳)科技有限公司
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