地震数据采集系统中频谱均衡技术的应用及改进

Application and improvement of the spectrum equalization technology in seismic data acquisition system

地层的高频吸收衰减效应是导致地震勘探分辨率不高的主要原因之一，在高分辨率野外地震数据采集系统中，频谱均衡滤波器是所设置的重要部件。本文以频谱均衡滤波器的原理和地层吸收衰减特性为基础，用计算机模拟的方法研究地层吸收衰减使分辨率降低的程度和频谱均衡滤波器对分辨率的补偿效果，对目前仪器中采用的频谱均衡技术提出了改进意见。

Earth’s absorption and attenuation effect on high frequency signal is one of the chief reasons for causing the resolution of seismic prospecting to be not high. In field high-resolution seismic data acquisition system, the spectrum equalization filter is an important part installed. In this paper we study the resolution reduction degree caused by Earth’s absorption and attenuation and the resolution compensation effect of spectrum equalization filters on the basis of the principle of the spectrum equalization filter and the strata’s absorption and attenuation characteristics. Improvement proposals of the spectrum equalization technology adopted in present instruments are put forward in this paper.