频率-波数域方法的发展及其在台阵数据分析中的应用

The improvement of frequency-wavenumber analysis methods and its application in array data processing

摘要:

频率-波数域分析（Frequency-wavenumber analysis，简称F-K analysis）是一种常用的台阵数据处理方法，在地震学等领域具有良好的应用效果。本文通过介绍F-K分析的基本原理及各种改进的F-K分析方法，并结合实例综述了其在台阵数据分析中的几种应用，包括检测微弱信号源、分析噪声特征、提取面波频散曲线、台阵设计这4方面；通过对这些研究的回顾，本文总结了该研究领域的新进展及需要注意的问题，并对F-K成像新的应用前景进行了分析和展望。

Abstract:

Frequency-wavenumber analysis is a commonly used method in array processing,and has a good effect in seismology and other fields. In this paper,we firstly illustrate the basic principle of F-K analysis and a variety of improved F-K methods,and then present the application of these techniques in array data analysis,including the detection of weak sources,noise characteristic analysis,the extraction of surface wave dispersion curves,the estimation of different array design schemes. Through the overview of these four aspects,we analyze the new progress and problems to be noted in this field,and prospect the potential application of F-K analysis method.