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本文介绍了基于信号局部统计性质的、能同时压制加性高斯噪声和脉冲噪声的自适应顺序统计滤波器的基本原理。为了进一步强化滤波器保护同相轴细节的能力,文中将自适应顺序统计滤波器与加权中值滤波器相结合,针对地震资料实际情况,分别对地震剖面噪声方差的估计、自适应系数的计算以及加权中值滤波的权的设计等进行了研究,并研制了相应的软件;用实际资料对该方法进行检验,结果证明该方法有效而实用。
This paper introduces the basic principle of an adaptive sequential statistical filter based on the local statistical properties of signals that can simultaneously suppress additive Gaussian and impulsive noise. In order to further strengthen the ability of the filter to protect the details of the phase axis, this paper combines the adaptive order statistical filter with the weighted median filter. According to the actual seismic data, we estimate the noise variance of seismic profile, the calculation of adaptive coefficients and The design of the weighted median filter, and so on. The corresponding software is developed. The method is verified by the actual data. The result proves that the method is effective and practical.