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我们使用一台简单的PC机的采集和处理系统改进了高分辨率的浅海地震数据的质量。该系统由一台PC机、一个A/D转换器和一台磁—光盘机组成。该系统被设计为以每秒多达60000个采样的单道数据进行采集,并用一个简单程序完成地震数据处理。试验在东朝鲜海南部浦项附近进行。试验用的地震系统为空气枪和一台3.5kHz海底地层剖面仪。分析了震源的频谱特性。进行了包括增益恢复、反褶积、带通滤波和海浪滤波的简单数字信号处理。该系统处理的地震剖面质量与模拟剖面相比大有提高。用基于PC机的系统采集、处理高分辨率浅海地震资料既经济又适用。
We have improved the quality of high-resolution, shallow-sea seismic data using a simple PC acquisition and processing system. The system consists of a PC, an A / D converter and a magneto-optical drive. The system is designed to acquire as many as 60,000 samples per second of single channel data and perform seismic data processing in a simple program. The test was conducted near Pohang, in the eastern part of Korea. The experimental seismic system is an air gun and a 3.5 kHz subsea stratum profiler. The spectral characteristics of the source were analyzed. Simple digital signal processing including gain recovery, deconvolution, band-pass filtering, and sea-wave filtering was performed. The quality of the seismic profile processed by this system has greatly improved compared to the simulated profile. Using PC-based systems to acquire and process high-resolution shallow-sea seismic data is both economical and applicable.