LOW‐PASS FILTERING OF NOISY SCHLUMBERGER SOUNDING CURVES PART 1: THEORY*
作者:
D. PATELLA,
期刊:
Geophysical Prospecting
(WILEY Available online 1986)
卷期:
Volume 34,
issue 1
页码: 109-123
ISSN:0016-8025
年代: 1986
DOI:10.1111/j.1365-2478.1986.tb00456.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
ABSTRACTA contribution is given to the solution of the problem of filtering noise‐degraded Schlumberger sounding curves. It is shown that the transformation to the pole‐pole system is actually a smoothing operation that filters high‐frequency noise. In the case of residual noise contamination in the transformed pole‐pole curve, it is demonstrated that a subsequent application of a conventional rectangular low‐pass filter, with cut‐off frequency not less than the right‐hand frequency limit of the main message pass‐band, may satisfactorily solve the problem by leaving a pole‐pole curve available for interpretation. An attempt is also made to understand the essential peculiarities of the pole‐pole system as far as penetration depth, resolving power and selectivity
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