二次型时频分析技术的开发与应用

Development and application of quadratic form time-frequency analysis technology

基于二次型的时频分析是高分辨率时频分析技术的有效方法之一,该项技术能够有效反映时变信号的频谱特性,具有分辨率高、能量集中和跟踪瞬时频率的特点。从时变信号的特点出发,阐述了二次型时频分析技术的基本方法原理,采用正演模型分析验证了该方法的有效性,并在实际地震资料中应用于识别物源方向、划分沉积相带、预测储层结构以及相对厚度等诸多方面,均取得了较好的效果。

The time-frequency analysis based on quadratic form is an efficient method of high resolution time-frequency analysis technology,it can reflect frequency spectrum property of time variant signal efficiently and has such features as high resolution and focus energy and track instantaneous frequency.Based on the feature of time variant signal,the authors introduce a basic method truth of quadratic form time-frequency analysis technology and verify its validation by using forward model analysis.The technology is used to identify the source orientation and classify sedimentary facies belt and predict structure and relative thickness of reservoir,there is good effect in all of use.