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在实际工作中,通常认为直升机频率域电磁系统最大勘探深度为150m,但这些都是根据实际的勘查经验得出的,没有统一的标准。本文运用均匀半空间模型,对比了Anderson和Guptasarma汉克尔变换方法,说明Guptasarma方法更优,并基于Guptasarma汉克尔变换方法,推导了不同装置的频率域电磁响应的理论公式,计算了不同装置的频率域电磁响应特征,认为不同装置的直升机频率域电磁系统,探测深度不同,提出对于不同产状的地质体,运用不同的装置进行探测,并给出了不同装置的频率域电磁系统的理论探测深度,具有一定的理论意义。
In practice, it is generally considered that the maximum exploration depth of electromagnetic systems in the frequency domain of helicopters is 150m, but these are based on actual exploration experience and there is no uniform standard. In this paper, the uniform half-space model is used to compare the Hankel transform method of Anderson and Guptasarma, which shows that the Guptasarma method is better. Based on Guptasarma Hankel transform method, the theoretical formula of electromagnetic response of different devices in frequency domain is deduced. The electromagnetic response of helicopter frequency domain in different devices is considered to have different probing depths. It is proposed that different devices should be used to detect geologic bodies of different origins, and the theory of electromagnetic field in different frequency domains Exploration depth, has a certain theoretical significance.