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Signal detection in DAS data using spectral analysis
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, EAGE GeoTech 2021 Second EAGE Workshop on Distributed Fibre Optic Sensing, Mar 2021, Volume 2021, p.1 - 5
Abstract
Summary
Signal identification is important part of interpretation of DAS measurements. Traditional analysis of frequency bands plots does always not provide detailed information about the temporal spectral content of the signal and does not contain information about its spatial spectral content. In this work it is proposed to identify different sources of DAS signal using the methods, which enable estimation of spatial and temporal spectrum of the signal, such as the continuous wavelet transform (CWT) and spectrogram. Their efficiency is studied by applying them to the synthetic DAS data.
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