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The application of adaptive self noise canceller on telluric data process

WANG Lan-wei~1,ZHAO Jia-liu~2,PANG Li-na~3(1.Institute of Crustal dynamics,CEA,Beijing 100085;2.Institute of Earthquake Science,CEA,Beijing 100036,China;3.China Earthquake Networks Center,CEA,Beijing 100036,China)  
At the same observation site,telluric observation will be interfered by the electric current in measuring the apparent resistivity,which appears in the waveform of square impulse,especially when the sampling rate is 1 sampling/second in telluric observation.The interference can not be easily removed.This paper introduced how to use the so-called "Adaptive Self Noise Canceller" in the digital signal processing to deal with telluric data with this kind of interference.The numerical modeling and actual data processing indicate that this method is promising in getting rid of the interference with greatly increasing the signalto-noise ratio in the telluric data analysis.
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