摘要
分析了用经验模态分解(EMD)方法处理非平稳信号的基本原理,完成了对实测海流资料的分离,分720h、25h、15h三种情况对EMD方法用于潮余流分离的有效性进行了验证。验证结果表明:EMD方法是一种有效的潮余流分离方法,尤其对于15h以内短期测流资料的潮余流分离具有明显的优势。
This paper analysed the basic principle of Empirical Mode Decomposition ( EMD ) method in non-stable signal processing, completed the separation of the actual current data, and tested the validity of using EMD to decompose tidal current and residual current in different situations of 720hours,25hours, and 15hours. The comparison showed that EMD method was effective for separating tidal and residual current, Especially the short-term current data within 15 hours.
出处
《海洋测绘》
2010年第2期42-45,共4页
Hydrographic Surveying and Charting