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首页> 外文期刊>Geophysical Prospecting >Aerial magnetic mapping with an unmanned aerial vehicle and a fluxgate magnetometer: a new method for rapid mapping and upscaling from the field to regional scale
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Aerial magnetic mapping with an unmanned aerial vehicle and a fluxgate magnetometer: a new method for rapid mapping and upscaling from the field to regional scale

机译:空中磁力仪和浮雕磁力仪的空中磁力测绘:一种新方法,用于从现场到区域规模的快速映射和上升

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摘要

Magnetic measurements with an unmanned aerial vehicle are ideal for filling the gap between ground and airborne magnetic surveying. However, to obtain accurate aeromagnetic data, the compensation of magnetic effects of the unmanned aerial vehicle is a challenge. Typically, scalar magnetometers are towed several metres under the unmanned aerial vehicle to minimize its magnetic field. In this study, a fluxgate three-component magnetometer is attached 42 cm in front of the unmanned aerial vehicle at the tip of a composite pipe. Using a scalar calibration, the sensor can be calibrated, and the permanent and induced magnetic fields of the unmanned aerial vehicle can be compensated. The contributions of the magnetic measurements at different altitudes to the unmanned aerial vehicle results were tested over an area of 1 km(2) in the Northern Vosges Mountains. The area is located in a hamlet surrounded by a forest where few geological outcrops are observed. Three magnetic surveys of the same area are obtained at different altitudes: 100, 30 and 1 m above the ground. The unmanned aerial vehicle magnetic data are compared with a helicopter aeromagnetic survey at 300 m above the ground and a ground magnetic survey using upward continuations of the maps to compare the results. The magnetic maps (300, 100, 30 and 1 m above the ground) show very different magnetic anomaly patterns (e.g. amplitude, shape, wavelength and orientation). The magnetic data at different altitudes improve the understanding of the geology from the local to more general scales.
机译:具有无人驾驶飞行器的磁力测量是填补地面和空气磁性测量之间的差距的理想选择。然而,为了获得精确的航空数据,无人驾驶飞行器的磁效应补偿是挑战。通常,标量磁力计在无人驾驶飞行器下牵引几米以最小化其磁场。在该研究中,在复合管尖端的无人空中车辆前面附接42cm的浮雕三分磁力计。使用标量校准,可以校准传感器,并且可以补偿无人驾驶飞行器的永久性和诱导的磁场。在北部孚日山区的一个地区测试了不同海拔地区对无人航空公司结果的磁力测量的贡献在1公里(2)中进行了测试。该地区位于哈姆雷特,被观察到几个地质露头的森林。在不同的海拔高度的地面获得相同区域的三个磁性调查:100,30和1米以上。无人驾驶飞行器磁数据与地面300米的直升机航空磁性测量进行比较,使用地图的向上延续进行地面磁性调查来比较结果。磁性贴图(地面上方300,100,30和1M)显示出非常不同的磁异常图案(例如,振幅,形状,波长和方向)。不同海拔地区的磁数据改善了对本地地质的理解,以更长的尺度。

著录项

  • 来源
    《Geophysical Prospecting》 |2020年第7期|2307-2319|共13页
  • 作者单位

    Univ Strasbourg EOST CNRS Inst Phys Globe Strasbourg 1 Rue Blessig F-67084 Strasbourg France|Cardem 7 Rue Uranium Bischheim France|Bur Rech Geol & Minieres DGR GAT 3 Ave Claude Guillemin BP36009 F-45060 Orleans 2 France;

    Univ Lorraine GeoRessources CNRS F-54000 Nancy France;

    Univ Strasbourg EOST CNRS Inst Phys Globe Strasbourg 1 Rue Blessig F-67084 Strasbourg France;

    Univ Lorraine GeoRessources CNRS F-54000 Nancy France;

    Univ Lorraine GeoRessources CNRS F-54000 Nancy France;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Potential field; Magnetics; Acquisition;

    机译:潜在领域;磁性;收购;

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