自然环境噪声条件下脉冲震源符号位地震记录的真振幅恢复

TRUE AMPLITUDE RECOVERY FOR PULSE SOURCE SIGN-BIT SEISMIC RECORD WITH PHYSICAL ENVIRONMENT NOISE

本文就自然环境噪声条件下脉冲震源符号位地震记录的真振幅恢复问题展开讨论。自然环境噪声可认为是呈高斯分布的,这就已能满足符号位地震记录恢复真振幅对噪声分布的要求。因此,无需再叠加人工噪声。在高斯噪声分布条件下,单纯叠加是不能恢复真振幅的,叠加结果必须作校正。为了尽可能减少恢复真振幅所需的叠次,使真振幅恢复具有现实的可能性,在野外采集时,必须选取合宜的观测系统,并控制震源能量,以限制所需恢复信号的动态范围;数据处理时,在叠加校正之后,还应作平滑滤波,这样就能得到较好的恢复效果。

The topic coming up for discussion in this paper deals specifically wild the true amplitude recovery (TAR) for pulse source sign-bit seismic record with physical environment noise which is assumed to be the Gaussian distribution. And this does help suit the needs of noise distribution in true amplitude recovery for sign-bit seismic record,so it is unecessary to restack the artificial noise. On condition of the Gaussian noise distribution.no way to perform TAR by using stack only. In this case, correction for the stacked result has to be made. With the attempt to reduce to minimum the stacking fold required for TAR so as to ensure the successful performance of TAR,while making field data acquisition,it's of paramount importance to pick an appropriate layout chart and equally important is to control the charge size so that to confine the dynamic range to be required for signal recovery. In data processing,smoothing filter is still to be required even after correction. Thus,a preferable result of recovery could be expected.