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| SAMPLING AND PROCESSING TECHNIQUES OF DIGITIZED SIGNALS IN TRANSIENT ELECTROMAGNETIC METHOD |
| JI Yan-ju, LIN Jun, CHENG De-fu, YU Sheng-bao |
| Institute of Intelligent Measurement and Control Technology, Jilin University, Changchun 130026, China |
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Abstract This paper studies signal acquisition and processing techniques in the transient electromagnetic method. The densely-and uniformly-distributed original data are sampled at the interval of approximative logarithm (about 1.2 times of equal logarithm). By means of geometrical average in sampling window, the SNR (Signal-to-Noise Ratio) is improved.
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Received: 12 September 2002
Published: 24 April 2003
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