时—空变数字增益在地震数据处理中的应用

Application of time-space dependent digital gain system to seismic data processing

为了解决构造复杂地区地震资料上的不同层次的反射能量强弱过于悬殊的问题，采用通常的动平衡模块和比例命令的办法都难以适应多层构造和各种走向的地层界面的均衡显示。为此研制了时—空变数字增益控制系统。该系统可沿时间和测线方向计算不同的比例门长，且可对不同门长的覆盖量进行精确的控制，因而能克服显示各个门之间的突变效应。

Usual dynamic equilibrium module and scale order can hardly help to achleve uniform images of multilayer structure and various geologic interfaces having different strike directions in complicated area. Thus, time-space dependent digital gain control system was designed successfully. The system automatically estimates different windows and reasonably control digital gain according to different windows to avoid abrupt energy variatiOn between adjacent windows .thus improving seismic section.