研究地震面波和高频噪音的实用信号采集系统

A Practical Signal Acquisition System for the Study of Seismic Surface Wave and High frequency Noise

在石油、天然气地震勘探中，地震面波和高频噪音会对地震记录产生严重干扰．要压制面波和高频噪音对地震记录的影响，必须先了解面波和高频噪音的特征，而要准确了解面波和高频噪音的特征，需要采集三分量的地震信息．使用大型地震仪系统进行三分量地震信息采集费用昂贵，这对于小规模的理论研究是不经济的．文中介绍了一种用ＣＳ２９０２Ｍ型动态分析仪和加尔彼林式（５４．７４°对称正交坐标系）三分量检波器组成的一种简易三分量地震信息采集系统．该系统配有坐标旋转软件，为了解地震波的性质，研究面波和高频噪音对地震记录的影响，提供了一种简易、有效的三分量地震信息采集工具．

In seismic exploration,the recordered seismic signal may be seriously polluted by surface wave and high frequency noise.In order to weakened the interference,the properties of the surface wave and high frequency noise must be known.It is very expensive to recorder the seismic signal with a large seismic apparatus system in a theoretical study.For this purpose,a convenient signal acquisition system is introduced composed of a dynamic signal analyzer CS2092M and a three component geophone.A software for coordinate conversion is provided in the system.It is proven by practice that the signal acquisition system is very useful and convenient for theoretical studies.