最大熵法与传统法海浪谱估计的比较  

THE COMPARATION OF THE MAXIMUM ENTROPY METHOD WITH CONVENTIONAL ONE FOR THE FREQUANCY SPECTRUM ESTIMATION OF SEA WAVE

作　　者：蒋德才[1] 张大错[1] 高新生[2] 

机构地区：[1]物理海洋学与海洋气象学系 [2]计算机室

出　　处：《山东海洋学院学报》1985年第3期12-21,共10页

摘　　要：海浪功率谱是描述海浪波面随机过程的基本特征参数，它既可研究海浪能量相对于频率的分布，又可研究海浪波面对外表现的统计规律。因此，准确求出海浪频谱具有重要的实用意义。目前常用的海浪频谱估计自相关法和周期图法，它们都引进一些假设及某种权函数的主观意志。The priciple of the MEM (Maximum Entropy Method) is briefly introduced in this paper. The determination of the length of prediction filter is discussed in the case of the MEM being used for estimating the spectrum of sea wave (wind wave, mixed wave) profile. The quality of the spectrum estimation with MEM and convenlional methods is also dealt with under the condition of the same sampling interval and the same sample capacity, it is showed that the MEM has higher resolution, especially for the short series of wave profile records, it is much better than conventional methods.

关 键 词：最大熵法 海浪 谱估计 随机过程 自相关法 周期图法 

分 类 号：P731.22[天文地球—海洋科学]