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对符号位记录效果的大量研究表明:对于脉冲震源,信号的恢复取决于信噪比和噪声的统计性质;对于可控震源数据,Shirley等(1983)指出,可把检波器信号作为伪随机噪声来考虑。他们从理论和计算机研究证明了这一点,并说明了导出的畸变的特性。本文讨论了脉冲震源和可控震源符号位数据的信号恢复问题。对可控震源符号位数据的信号恢复进行了较详细的讨论,以便较好地说明伪随机噪声理论。结果表明,只要满足条件,脉冲震源和可控震源的符号位数据都能很好地恢复信号,但由于可控震源的限制条件容易满足而应用较广。
A large number of studies on the sign bit recording effect show that for pulse sources, the signal recovery depends on the statistical properties of signal to noise ratio and noise; for vibroseis data, Shirley et al. (1983) point out that the detector signal can be used as pseudo-random noise To consider. They demonstrate this from both theoretical and computational research and illustrate the characteristics of the derived distortion. This article discusses the signal recovery of pulse source and vibrator symbol bit data. The signal recovery of the vibrator symbol bit data is discussed in more detail in order to better illustrate the pseudo-random noise theory. The results show that, as long as the conditions are met, the sign bit data of the pulse source and the vibrator can recover the signal well, but it is widely used because of the constraints of vibrator.