[1]SUN Tianwei,WANG Baoshan.Comparative Study of Deconvolution Methods in Signal Processing of Untuned Large-Volume Airgun[J].Journal of Seismological Research,2019,42(01):88-95.
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Comparative Study of Deconvolution Methods in Signal Processing of Untuned Large-Volume Airgun
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
42
Number of periods:
2019 01
Page number:
88-95
Column:
Public date:
2019-04-20
- Title:
- Comparative Study of Deconvolution Methods in Signal Processing of Untuned Large-Volume Airgun
- CLC:
- P315.61
- DOI:
- -
- Abstract:
- Using airgun data from Binchuan in Yunnan Province,we compare the calculation effects of damping factor method,water level method,least squares method,time domain iteration method and Wiener method on the removal of the time function. The results show that:① The waveforms obtained by the above methods have little difference when the parameters are correctly selected. The damping coefficient method and water leveling method are the most difficult to choose. The least squares deconvolution can automatically find the optimal solution,but the calculation efficiency is too low if the step size is set too small,and false extreme points are likely occurred when the step size is set too large. The parameters of the time domain iteration and Wiener method have relatively little influence on the results.② For high signal-to-noise ratio(SNR)stacked signals,the SNR obtained by the time domain iterative deconvolution method is the highest,and the computation time is within the accepted range,so it is a good deconvolution method. For single-gun low SNR signals,the time domain iterative method can be chosen when we just need to pick the arrival time. But when waveform information is needed,the Wiener method is more effective in terms of the reliability of the waveform and the calculation efficiency.
- References:
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Last Update:
2019-04-25