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在地震勘探中,有效地震波是在干扰背景上进行記录的,在記录上識別有效波一直是地震勘探的基本問題。本文中,我們假定地震脉冲是雷克对称形式的波漣,用随机过程分析法,討論了地震脉冲在平稳正态分布随机干扰影响下的幅度和相角分布函数及其它主要的統計特点,并指出地震脉冲波同相軸能够予以識别的条件,同相軸的可靠程度,能够予以識別的同相軸对应要求的最少地震脉冲波瞬时强度——門限值,并分析了用組合方法控制門限值的方法。
In seismic exploration, the effective seismic wave is recorded on the interference background. It is always the basic problem of seismic exploration to identify the effective wave in the record. In this paper, we assume that the seismic pulse is a ripple symmetrical form of ripples. Using the stochastic process analysis method, we discuss the magnitude and phase angle distribution functions of seismic pulses under the influence of stochastic disturbance of stationary normal distribution and other major statistical features. The condition that the seismic pulse wave can be identified, the reliability degree of the phase axis, the minimum seismic instantaneous intensity of the seismic pulse wave that can be identified by the corresponding phase axis can be identified, and the method of threshold control by the combination method is analyzed.