摘要
石油地震勘探中的组合法,已有较长的历史.对于改善地震记录面貌,提高讯噪比起了良好的作用.至今,野外施工中还在使用,在复杂地区尚有增加检波器个数之势.在模拟回放处理和电子计算机处理资料时,也在某些情况下使用.可见组合法还有其生机.规则波组合法的研究,从早期的简单正弦振动求和法算出其方向系数,到以后的福里哀频谱法,从理论上不断提高了分析能力,而且对组合特性的研究更加深入.但这些办法在分析中也还只是把波分解成谐波之和,并未算出合成波之波形.本文就是要弥补这方面的不足,从拉氏变换的角度,先导出线性组合的系统传导特性,给出输入之波形求输出之结果.这样对组合法提供更深入更直观的(输出)分析.希望对从事石油地震勘探工作的同志能有所俾益.
Abstract
It has been a rather long time since the pattern method was applied in seismic prospecting for oil for improving the appearance of the seismic records as well as the signal-to-noise ratio. Even up to the present, it is still used in the field, however, the number of geophones are increased, particularly in the complicated region. Moreover, it could be used in analog playback and in data processing by electronic computer. So we can see that the pattern method is still a useful tool.By studying the regular wave pattern method ranging from the simple sinusoidal vibration summation by which the direction coefficient could be calculated to the later Fourier frequency spectrum method, it does not only heighten the awareness of the analysis theoretically but also probe deeply into the study of pattern characteristics. Nevertheless, what all these methods could do is that wave could be decomposed to harmonic sum only, the synthetic waveform was not calculated yet.The author's attempt is to make up its inade ong this line. From the viewpoint of Laplace Transform, the conduction characteristics of linear array system must be. firstly deduced and then input waveform is given in order to achieve the result of output. In this way the deeper and audio-visual output analysis which is used for pattern method can be put forward. It is hoped that this paper would be helpful to those who are engaged in seismic prospecting.
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