A METHOD TO DETECT SUDDEN CHANGES IN SIGNALS

Heikki Jokinen

Abstract

Measurements may contain disturbances like transients or abrupt level changes. Although the duration of these effects is often short, the computed results derived from the measurements may be heavily corrupted. In order to be able to analyse only the non-disturbed region of the signal, the detection of anomalies is needed. In this paper we introduce a method for detecting sudden changes applying windowed moving variance computation technique.

Keywords

signal processing, sudden changes, moving variance

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PWC-2003-TC4-082.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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