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随着对石油和天然气需求的增长,勘探工作的难度加大,对物探工作的要求越来越高。除了利用新的物性这个全新的课题外,如何提高原有物探方法的勘探能力则是面临的现实问题,本文从这个角度介绍一种提高测量功率谱分辨力的方法。 1967年,伯格J.P.提出了最大熵谱分析法。1970年以后,被另外一些学者解释为自回归谱分析法或全极点模型法等,并证实该法与常规的计算功率谱方法相比有很高的分辨力。例如在分析天然地震记录的地震波时,可分辨千分之几赫的低频分量,提供更
With the increasing demand for oil and natural gas, the exploration work is more difficult and the requirements for geophysical work are getting higher and higher. In addition to using this new topic of new physical properties, how to improve the exploration capability of the original geophysical prospecting is a real problem. This article introduces a method to improve the resolution of the measured power spectrum from this perspective. In 1967, Berg J.P. proposed maximum entropy spectral analysis. After 1970, it was interpreted by some scholars as autoregressive spectral analysis method or all-pole model method and so on, and proved that this method has a higher resolution than the conventional method of computing power spectrum. For example, in the analysis of natural seismic records of seismic waves, the resolution of a few thousandths of the low-frequency components to provide more