COMPLEX ENVELOPE IDENTIFICATION OF WAVE GROUPS

Proceedings of the International Conference on Coastal Engineering

Han-Bin Liang¹  Rodney J. Sobey¹ 

[1] Hydraulic and Coastal Group, Department of Civil Engineering, University of California, Berkeley

关键词: wave groups;    wave envelope;    envelope identification;   

DOI  :  10.9753/icce.v20.%p

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

The complex envelope function is presented as the natural analysis technique for wave records where the identification of wave groups is a dominant interest. Algorithms have been developed and confirmed for separation of the complex envelope function, estimation of the dominant frequency and unwrapping of the phase function. Cross-correlograms and coherence spectra reveal a link between the envelope amplitude and phase traces that appears to be an intrinsic property of wave groups. Nevertheless, the majority of the information in typical wave records can be described as random, accounting for the relative success of the Gaussian random wave model.

【 授权许可】

Unknown