Calculation and application of full-wave airborne transient electromagnetic data in electromagnetic detection
Calculation and application of full-wave airborne transient electromagnetic data in electromagnetic detection
复制标题
全波机载瞬变电磁数据计算及在电磁探测中的应用
DOI：
10.1007/s11771-019-4067-x
复制
发表时间：
2019-05
影响因子：
4.4
通讯作者：
Guan Shan shan
中科院分区：
文献类型：
--
作者：
Ji Yan ju;Zhu Yu;Yu Ming mei;Li Dong sheng;Guan Shan shan
Airborne electromagnetic transient method enjoys the advantages of high-efficiency and the high resolution of electromagnetic anomalies, especially suitable for mining detection around goaf areas and deep exploration of minerals. In this paper, we calculated the full-wave airborne transient electromagnetic data, according to the result of numerical research, the advantage of switch-off time response in electromagnetic detection was proofed via experiments. Firstly, based on the full-wave airborne transient electromagnetic system developed by Jilin University (JLU-ATEMI), we proposed a method to compute the full-waveform electromagnetic (EM) data of 3D model using the FDTD approach and convolution algorithm, and verify the calculation by the response of homogenous half-space. Then, through comparison of switch-off-time response and off-time response, we studied the effect of ramp time on anomaly detection. Finally, we arranged two experimental electromagnetic detection, the results indicated that the switch-off-time response can reveal the shallow target more effectively, and the full-waveform airborne electromagnetic system is an effective technique for shallow target detection.摘要航空瞬变电磁法具有探测效率高、 电磁异常分辨率高等优点, 尤其适用于深部矿产及老矿区周 边的资源探测。本文模拟了全波形航空电磁数据, 结合数值研究的结果, 通过实验验证了关断期间段 电磁响应在异常探测中的优势。首先, 基于吉林大学研制的航空瞬变电磁系统(JLU-ATEMI 型), 采用 时域有限差分方法和卷积算法计算了三维模型的全波形航空瞬变电磁响应, 并通过均匀半空间模型验 证了计算的正确性; 然后, 对比关断期间段和关断后段的电磁响应, 研究了下降沿时间对于异常探测 的影响; 最后, 开展了两组电磁探测实验, 结果表明关断期间段的电磁响应能够更有效地揭示浅层目 标体, 航空瞬变电磁系统对于浅层目标探测是一种有效的技术手段。
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影响因子：
1.4
作者：
M. Zhdanov
通讯作者：
M. Zhdanov
影响因子：
0.9
作者：
P. Gunn;W. A. Brook
通讯作者：
P. Gunn;W. A. Brook
影响因子：
1.4
作者：
Yin Chang-Chun;Huang Wei;Ben Fang
通讯作者：
Ben Fang
影响因子：
0.9
作者：
Guimin Liu;M. Asten
通讯作者：
Guimin Liu;M. Asten
DOI：
--
发表时间：
2012
期刊：
Chinese Journal of Geophysics
影响因子：
--
作者：
Xu Yangcheng;Lin Jun;L. Suyi;Zhang Xiaoshuang;Wang Yuan;Jia Yanju
通讯作者：
Xu Yangcheng;Lin Jun;L. Suyi;Zhang Xiaoshuang;Wang Yuan;Jia Yanju