Using a currentloop induced magnetic anomaly to calibrate an airborne magnetometry system

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Using a currentloop induced magnetic anomaly to calibrate an airborne magnetometry system
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                        Fan ZhenfengFan Zhenfeng
Key Laboratory of Electromagnetic Radiation and Sensing Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China
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Huang LingHuang Ling
Key Laboratory of Electromagnetic Radiation and Sensing Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China
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Liu DungeLiu Dunge
Key Laboratory of Electromagnetic Radiation and Sensing Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China
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Xu XinXu Xin
Key Laboratory of Electromagnetic Radiation and Sensing Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China
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Zhang XiaojuanZhang Xiaojuan
Key Laboratory of Electromagnetic Radiation and Sensing Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China
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Fang GuangyouFang Guangyou
Key Laboratory of Electromagnetic Radiation and Sensing Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China
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Affiliation:Key Laboratory of Electromagnetic Radiation and Sensing Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China
Clc Number:TN911.7
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Abstract:

Airborne magnetometry has a long and fruitful history in many applications. The acquired data are usually contaminated by noises originated from a variety of sources, which migrates the effectiveness of the system on detecting magnetic targets. In this paper, a large loop with DC current is designed, serving as a manmade magnetic target. Then, an experiment for helicopterborne magnetometry is performed to measure the induced magnetic field at different elevations. The acquired data after denoising can be used to calibrate the airborne magnetometry system which will be further applied to aeromagnetic measurement or magnetic targets detection. The data processed result shows a good performance for the system because it is capable of detecting a magnetic target of a few nT at a long distance.

Key words:magnetic anomaly; aeromagnetic measurement; magnetometer; signal denoising

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Online: October 17,2016
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