An electronic filter for tidal frequencies (25μHz)

Ronald Green; Paul Somerville

doi:10.1080/00288306.1970.10431339

An electronic filter for tidal frequencies (25μHz)

Ronald Green, Paul Somerville

Research output: Contribution to journal › Article

Abstract

A digital low-pass filter has been constructed, the attenuation of which varies linearly with frequency. The range over which these desirable filter characteristics apply is not limited by the availability of capacitors and inductors of reasonable size as required by analog low-pass filters. The filter has been designed for the highcut pre-filtering of a long-period (e.g., diurnal) signal, which is a necessary process to be performed if aliasing is to be avoided, when the signal is to be digitised using a low sampling rate.

Original language	English
Pages (from-to)	684-689
Number of pages	6
Journal	New Zealand Journal of Geology and Geophysics
Volume	13
Issue number	3
DOIs	https://doi.org/10.1080/00288306.1970.10431339
Publication status	Published - 1970
Externally published	Yes

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10.1080/00288306.1970.10431339

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AB - A digital low-pass filter has been constructed, the attenuation of which varies linearly with frequency. The range over which these desirable filter characteristics apply is not limited by the availability of capacitors and inductors of reasonable size as required by analog low-pass filters. The filter has been designed for the highcut pre-filtering of a long-period (e.g., diurnal) signal, which is a necessary process to be performed if aliasing is to be avoided, when the signal is to be digitised using a low sampling rate.

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DO - 10.1080/00288306.1970.10431339

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