噪声强度与地震接收系统

NOISE LEVEL AND SEISMIC RECEIVING SYSTEM

地矿部第四物探大队,新乡453700

The 4th Geophysical Exploration Party, MGMR

本文首先从地震接收系统的滤波特性入手,论述了接收系统的陷波效应、低通滤波器效应和相关效应.接着引入地震噪声因素,从野外滤波最佳化的角度分析了高分辨率接收系统、叠加组合法接收系统和强化接收系统的应用条件,给出了以噪声强度为约束条件设计地震接收参数的方法.最后以实例展示了应用效果.

To begin with, the notch filtering, low-pass filtering and correlation effects in seismic receiving systems are discussed through analyzing their filtering characteristics. After introducing a seismic noise factor, analysis on the applied conditions for high-resolution, stack array and enhanced receiving systems is made in the context of optimizing acquisition filters and the method to selecting seismic receiving parameters with a nominal noise level as constraints is also presented. The practical effect is eventually demonstrated with applied examples.