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| Integration and application of an aeromagnetic survey system based on unmanned helicopter platform |
| Yong-Zai XI1,2,3, Ning LU1,2,3, Lan ZHANG4, Jun-Feng LI1,2,3, Fu-Ming ZHANG5, Shan WU1,2,3, Gui-Xiang LIAO1,2,3, Fang BEN1,2,3, Wei HUANG1,2,3 |
1. Laboratory of Geophysical Electromagnetic Probing Technologies,Langfang 065000,China
2. Ministry of Natural Resources, Institute of Geophysical and Geochemical Exploration,CAGS,Langfang 065000,China
3. Laboratory of Geophysical EM Probing Technologies, MLR, Langfang 065000,China
4. North China Institute of Aerospace Engineering, Langfang 065000,China
5. Shanxi Provincial Coal Geological,Geophysical Prospecting,Surveying and Mapping Institute,Jinzhong 030600,China |
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Abstract This paper introduces the research, development and integration of an unmanned helicopter aeromagnetic survey system. The system uses an unmanned helicopter as flying platform to carry out the high-precision aeromagnetic equipment. As all know, the unmanned helicopter doesn't need a runway to take off and land, and has the ability to self-navigate according to designed lines and to work at night. Thus, it can get a higher efficiency at a lower costing. An aeromagnetic compensation flight whose accuracy was 0.046 9 nT and several survey flights have been accomplished. Compared with the previous aeromagnetic survey in the same area, the characteristics of the geomagnetic field are basically alike, which validates the effectiveness of the unmanned helicopter aeromagnetic system. The unmanned helicopter aeromagnetic anomaly map is more detailed because of the different parameters such as scale and instrumental accuracy and sampling rate between the two systems. This unmanned helicopter aeromagnetic survey system provides an effective and flexible means for large scale, high-precision and small area aeromagnetic survey.
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Received: 12 June 2018
Published: 20 February 2019
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Magnetic back ground of the unmanned helicopter
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The unmanned helicopter aeromagnetic system
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The diagram of the structure of the unmanned helicopter aeromagnetic survey system
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The diagram of hovering maneuver for the unmanned helicopter aeromagnetic compensation
a— roll; b—pitch; c— yaw
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The profile of three components of fluxgate magnetometer
a— X component; b— Y component; c— Z component
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Comparison between raw data and compensated data
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Result of the unmanned helicopter aeromagnetic compensation test flight
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Comparison of aeromagnetic anomalies of a shoalarea in Jiangsu province
a— manned aerial vehicle aeromagnetic survey; b— unmanned helicopter aeromagnetic survey
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