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本文从理论上讨论了恢复符号位地震记录真振幅的问题,分别提出了随机噪声的概率密度呈均匀分布和正态分布时恢复真振幅的误差公式。文中列举了这两种概率分布下的实例,认为随着迭加次数的增加,由符号位地震记录恢复的振幅越逼近原始记录的真振幅。试验表明,迭加次数至少要达到700次以上。试验还表明,在相同的迭加次数下,噪声呈正态分布的效果要比均匀分布效果好。
In this paper, the problem of recovering the true amplitude of the seismograms of sign bit is theoretically discussed, and the error formulas for recovering the true amplitude of random noise when the probability density is uniform and normal are proposed. In this paper, we give examples of these two kinds of probability distributions, and consider that as the number of iterations increases, the amplitude recovered by the sign bit seismogram approximates the true amplitude of the original record. Experiments show that the number of iterations to reach at least 700 times or more. The experiment also shows that under the same number of iterations, the effect of normal distribution of noise is better than that of uniform distribution.