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首页> 外文期刊>Journal of Applied Geophysics >Vibroseis deconvolution: A comparison of pre and post correlation vibroseis deconvolution data in real noisy data
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Vibroseis deconvolution: A comparison of pre and post correlation vibroseis deconvolution data in real noisy data

机译：振动卷积反卷积：真实噪声数据中前后相关的振动卷积反卷积数据的比较

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摘要

Vibroseis is a source used commonly for inland seismic exploration. This non-destructive source is often used in urban areas with strong environmental noise. The main goal of seismic data processing is to increase the signaloise ratio where a determinant step is deconvolution. Vibroseis seismic data do not meet the basic minimum-phase assumption for the application of spiking and predictive deconvolution, therefore various techniques, such as phase shift, are applied to the data, to be able to successfully perform deconvolution of vibroseis data.This work analyzes the application of deconvolution techniques before and after cross-correlation on a real data set acquired for high resolution prospection of deep aquifers. In particular, we compare pre-correlation spiking and predictive deconvolution with Wiener filtering and with post-correlation time variant spectral whitening deconvolution. The main result is that at small offsets, post cross-correlation spectral whitening deconvolution and pre-correlation spiking deconvolution yield comparable results, while for large offsets the best result is obtained by applying a pre-cross-correlation predictive deconvolution.
机译：弧菌是内陆地震勘探的常用资源。这种无损源通常用于环境噪声强烈的城市地区。地震数据处理的主要目标是在确定步骤为反卷积的情况下提高信噪比。震源地震数据不能满足尖峰和预测反褶积的基本最小相位假设，因此将各种技术（例如相移）应用于数据，以便能够成功地进行震源褶积的反褶积分析。在对深层含水层进行高分辨率勘探而获得的真实数据集上进行互相关之前和之后的解卷积技术的应用。特别是，我们将维纳滤波前相关峰值和预测反卷积与维纳滤波后相关时变频谱白化反卷积进行比较。主要结果是，在小偏移量下，互相关后频谱白化解卷积和预相关尖峰解卷积可得到可比较的结果，而对于大偏移量，通过应用互相关前预测反卷积可获得最佳结果。

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