23 January 2017 Conductivity depth imaging of Airborne Electromagnetic data with double pulse transmitting current based on model fusion
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Proceedings Volume 10322, Seventh International Conference on Electronics and Information Engineering; 103221M (2017) https://doi.org/10.1117/12.2265222
Event: Seventh International Conference on Electronics and Information Engineering, 2016, Nanjing, China
Abstract
The airborne electromagnetic (AEM) systems have been used traditionally in mineral exploration. Typically the system transmits a single pulse waveform to detect conductive anomaly. Conductivity-depth imaging (CDI) of data is generally applied in identifying conductive targets. A CDI algorithm with double-pulse transmitting current based on model fusion is developed. The double-pulse is made up of a half-sine pulse of high power and a trapezoid pulse of low power. This CDI algorithm presents more shallow information than traditional CDI with a single pulse. The electromagnetic response with double-pulse transmitting current is calculated by linear convolution based on forward modeling. The CDI results with half-sine and trapezoid pulse are obtained by look-up table method, and the two results are fused to form a double-pulse conductivity-depth imaging result. This makes it possible to obtain accurate conductivity and depth. Tests on synthetic data demonstrate that CDI algorithm with double-pulse transmitting current based on model fusion maps a wider range of conductivities and does a better job compared with CDI with a single pulse transmitting current in reflecting the whole geological conductivity changes.
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Jing Li, Jing Li, Mei Dou, Mei Dou, Yiming Lu, Yiming Lu, Cong Peng, Cong Peng, Zining Yu, Zining Yu, Kaiguang Zhu, Kaiguang Zhu, } "Conductivity depth imaging of Airborne Electromagnetic data with double pulse transmitting current based on model fusion", Proc. SPIE 10322, Seventh International Conference on Electronics and Information Engineering, 103221M (23 January 2017); doi: 10.1117/12.2265222; https://doi.org/10.1117/12.2265222
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