利用沃尔什变换提高地震资料信噪比

Using Walsh transform to improve signal-to-noise ratio of seismic data

文中将基于沃尔什变换的滤波技术应用于压制地震资料噪音、提高地震资料信噪比中。该方法通过对地震信号进行序谱分析,以实现对噪声的压制。通过理论模型试算以及实际地震资料的应用,认为该方法在压制噪音方面具有良好的应用效果,且简单易实现、运算速度快,在压制噪音、提高信噪比方面具有良好的实用性。

The filter technique based on Walsh transform is used to suppress seismic noise in order to improve the signal-to-noise ratio of seismic data. This method uses the spectrum analysis of seismic signal to realize the noise suppression. Through estimation of theoretical model and application in the real seismic data, this method has a nice effect in elimination the noise of seismic data. This method is very simple to realize and very fast to calculate. It has a good practicability in suppressing noise and increasing the signal-to-noise ratio of the seismic data.