小波变换在随机海浪及相关课题中的应用与前景

APPLICATIONS AND PROSPECTS OF WAVELET TRANSFORM FOR RANDOM WAVES AND THE RELATED FIELDS

扼要介绍了小波变换的基本原理及其信号处理功能,综述了应用这一技术处理非平稳过程随机海浪,确定波群和异常波特性,判断波浪破碎,进行入反射分离,分析海洋和湖泊流场以及研究岸滩演变的时空变化过程与气象、海象的相关关系等方面的研究成果.讨论了这一技术在波浪动力特性认识、随机海浪的实验室模拟、波浪与建筑物相互作用研究方面的应用前景.

In this paper, the principle of the wavelet transform and its functions in signal processing are briefly introduced. A review is made on its applications to random waves and the related fields, including the analysis of the data of sea waves, determination of the characteristics of wave groups and freak waves, judgment of wave breaking, separation of incident and reflected wave components, analysis of the current fields in sea and lakes, and study of the relationship between temporal and spatial processes of shore evolution and the meteorological phenomena and sea state. The application prospects of this technique in this area are discussed, such as in studies of dynamic characteristics of sea wave, laboratory simulation methods of random waves and the interaction between waves and marine structures.