海洋科学Issue(4)：70-74,5.
二维EMD方法在微尺度波斜率波数谱提取中的应用
The computation method of slope wave-number spectrum of micro-scale waves based on the two-dimensional empirical mode decomposition
摘要
Abstract
To eliminate the effects of long gravity waves in spectral analysis, we used two-dimensional empirical mode decomposition (2D-EMD) to strain off long gravity waves. Then we conducted Fourier transform to get sea surface micro-scale spectrum. After further processing, the slope of the wave-number spectrum can be computed. The results showed that 2D-EMD method can effectively filter out long-wave aliasing information in images. The results of micro-scale slope wave-number spectrum were consistent with foreign. We compared the results between 2D-EMD and wavelet method. The results showed that 2D-EMD method had significant advantages for long-wave filter.关键词
二维EMD/海面微尺度波/斜率波数谱Key words
two-dimensional empirical mode decomposition(2D-EMD)/sea surface micro-scale wave/slope wave-number spectrum分类
海洋科学引用本文复制引用
宋平舰,张杰,贾永君,王岩峰..二维EMD方法在微尺度波斜率波数谱提取中的应用[J].海洋科学,2013,(4):70-74,5.基金项目
国家自然科学基金资助项目(60372077) （60372077）
