QIAO ZhongKun,
MA GuoQing,
ZHOU WenNa et al
.2020.Research on the comprehensive compensation of aeromagnetic system error of multi-rotor UAV Chinese Journal of Geophysics(in Chinese),63(12): 4604-4612,doi: 10.6038/cjg2020O0258
Research on the comprehensive compensation of aeromagnetic system error of multi-rotor UAV
QIAO ZhongKun1, MA GuoQing1, ZHOU WenNa2, YU Ping1, ZHOU Shuai1, WANG TaiHan1, TANG ShuiLiang3, DAI WeiMing3, MENG ZhaoHai4, ZHANG ZhiHou5
1. College of GeoExploration Science and Technology, Jilin University, Changchun 130026, China; 2. College of geological science and mineral resources, Lanzhou University, Lanzhou 730000, China; 3. Zhejiang Danian Technology Co., Ltd, Ningbo 315400, China; 4. Tianjin Navigation Instrument Research Institute, Tianjin 300131, China; 5. Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China
Abstract：The multiple-rotor UAV fluxgate aeromagnetic system can be widely applied in large-scale exploration of mineral resources due to its safety, stability and high efficiency. However, three-axis non orthogonal, sensitivity and zero deviation inconsistency in its sensor can produce steering error. In addition, fixed field interference, induction interference and eddy current interference exist in the system operation, which require to carry out complex calibration and compensation tests. This work found that the electromechanical interference of the aeromagnetic system mainly comes from the high-frequency interference of airborne equipment according to the measured data, and designed a corresponding low-pass filter for filtering such interference according to the high-frequency characteristics of the electromechanical interference. We also developed a simple and practical compensation model based on the Tolles-Lawson model and the characteristics of structure similarity of instrument steering error and flight platform maneuvering error, which can finish the compensation process of aeromagnetic data in the work area, by which a field compensation test can be made to obtain all the compensation parameters. Finally, the comprehensive compensation method was applied to the aeromagnetic data in the Jiashan area of Xingcheng City, Liaoning Province. The strip interference anomalies in aeromagnetic data were effectively removed by the developed method, and the aeromagnetic data after processing was consistent with the anomaly shape of ground magnetic data, which verified the effectiveness and practicability of the new method.
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