Extraction of sea state from HF radar sea echo:mathematical theory and modeling,一篇介绍海浪谱的非常好的文章，给初学者了解海浪模型，有一定的帮助。-Extraction of sea state from HF radar sea echo: mathematical theory and modeling, a descr iption is a very good article, wave spectrum, wave model for beginners to understand, there is some help.