检波器接收近道超调问题研究

Research on Problems of Near-trace Overshort of Geophone Data Acquisition

在高精度地震勘探中,检波器近道超调问题一直困扰着原始资料的记录和数据的处理分析,影响资料的准确性,引起记录超调现象的原因主要包括检波器参数、仪器前放和激发因素。针对施工中存在的引起检波器近道超调原因进行分析和研究,采用不同标准的检波器、不同的激振参数以及不同标准信号源输入的仪器记录测试,模拟野外环境进行实验,提出解决方案。

In high precision seismic exploration,geophone shortcut overshoot has interfered the original data recording and data processing,which affects the data accuracy. The main reasons causing record overshoot phenomenon includes geophone parameters,instrument preamplifier and stimulating factors. This paper analyzes and researches on the near-trace overshoot existing in construction,simulates field environment to carry out experiments by using different standard geophones and instrument with different vibration parameters and different standard signal source input,and finally,come up with solutions to provide technical support for field production.