In order to remove the electromagnetic coupling interference which was encountered frequently in IP measurement, most previous studies were based on the frequency characteristics of em coupling.

为了克服激发极化观测中经常遇到的电磁耦合干扰，以往研究大多基于电磁耦合的频率特点。

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Results show that it is distinctive in aspects of signal sampling, processing and anti-EM-interference.

结果表明：它在信号采集，处理和抗电磁干扰能力方面有独特之处。

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