离散余弦变换插值处理方案在海洋数据分析中的应用  

DCT interpolation method for marine data analysis

作　　者：陈璇 郑崇伟[2,3] 刘文鹏[2] 孙威[3] 田妍妍 高凡[5] 

机构地区：[1]解放军75822部队 [2]海军大连舰艇学院航海系 [3]解放军理工大学 [4]91379部队气象台 [5]92853部队

出　　处：《延边大学学报（自然科学版）》2016年第1期81-84,共4页Journal of Yanbian University（Natural Science Edition）

摘　　要：传统的插值法在处理海洋数据中端点附近的数据时,其处理方法较为复杂,不同的插值方案及端点处理方法对数据处理结果有较大影响.据此,本文对比分析了海洋资料处理中常见的空间插值方案和应用较少的频域插值方案(离散余弦变换,DCT),结果表明:与常见的空间插值方案相比,频域插值方案消耗处理时间较少,程序设计和编辑以及在端点位置的处理上较为便捷,同时受数据量的影响较小,实用性较高.For near the endpoints of the ocean data,the traditional interpolation method is more complex,and different interpolation schemes and processing methods for near endpoints have a great impact on the processing results.Thus,in this paper,we compared and analyzed the common spatial interpolation method and the frequency domain interpolation（FDI）method that is relatively little used in ocean data.The results show that,compared to the common spatial interpolation method,the FDI method is optimized in time consumption,convenient for program designing,program editing and processing the data near the endpoints;in addition,the FDI method is less impacted by the amount of data,and has advantages of high practicability.

关 键 词：空间插值 频域插值 离散余弦变换 

分 类 号：P731[天文地球—海洋科学]