航海DDM的表面内插方法比较与分析  

Comparison and Analysis for the Interpolation Methods in DDM for Navigation

作　　者：贾帅东[1,2] 刘一帆 戴泽源 JIA Shuaidong;LIU Yifan;DAI Zeyuan(Department of Oceanography and Hydrograhy&Cartography,Dalian Naval Academy,Dalian 116018;Key Laboratory of Hydrographic Surveying and Mapping of PLA,Dalian Naval Academy,Dalian 116018;Command Support Group of the Naval Staff Government,Beijing,100841)

机构地区：[1]海军大连舰艇学院军事海洋与测绘系,大连116018 [2]海军大连舰艇学院海洋测绘工程军队重点实验室,大连116018 [3]海军参谋部指挥保障大队,北京100841

出　　处：《舰船电子工程》2019年第11期65-69,共5页Ship Electronic Engineering

基　　金：国家自然科学基金项目（编号：41774014,41601498）资助

摘　　要：分析了航海用数字水深建模中的基本过程,介绍了航海DDM中常用的内插方法,并从航海用水深模型的保证率、表达度和效率出发,计算分析了航海用水深模型常用内插方法的应用效果。实验结果表明:1)在当前服务于航海的水深建模常用内插方法中,浅点推估法所建模型的保证率最高、线性内插法所建模型的表达度通常最高、最浅点法和线性内插法的元素效率最高;2)最浅点法所建模型表面不连续,线性内插法等其他常用内插方法所建模型表面光滑连续,故确定线性内插法在航海DDM的表面内插方法中最优。The basic progress of digital depth modeling for navigation is analyzed,and the common interpolation methods ap plied in the DDMs for navigation are introduced.Then the effects of the interpolation methods are analyzed in the DDMs for naviga tion from the aspect of the assuring rate,representativeness and efficiency.The experimental results demonstrate:1)the assuring rate of DDMs constructed with the shoalest interpolation methods is the highest,the represetativeness of the DDMs constructed by the linear interpolation methods is the highest,and the efficiency of the both two methods above are the highest in the common meth ods.2)the surface of the depth models constructed with the shoalest interpolation method is discontinuous while that with other com mon methods(e.g.the linear interpolation methods)is not.As such,the linear interpolation method is confirmed to be the optimal interpolation method in the DDMs for navigation.

关 键 词：数字水深模型 航海 内插 保证率 表达度 

分 类 号：P229[天文地球—大地测量学与测量工程]