水深源数据质量对海岛礁DEM精度影响的定量分析  

A Research on Analyzing the Influence of the Quality of Depth Source Data to the Accuracy of Island DEM

作　　者：刘一帆 贾帅东[2,3] 姚忠山 孙晓路 LIU Yifan;JIA Shuaidong;YAO Zhongshan(Command Support Group of the Naval Staff Government,Beijing 100841,China;Department of Military Oceanography and Hydrography,Dalian Naval Academy,Dalian 116018,China;Key Laboratory of Hydrographic Surveying and Mapping of PLA,Dalian Naval Academy,Dalian 116018,China)

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

出　　处：《海洋测绘》2019年第5期5-8,13,共5页Hydrographic Surveying and Charting

基　　金：国家自然科学基金(41601498;41774014)

摘　　要：面向海岛礁 DEM 构建的精度需求,定量分析了水深源数据质量对海岛礁 DEM 精度的影响规律。梳理了海岛礁 DEM 构建的基本过程,分析了海岛礁 DEM 精度的影响因素。在此基础上,以目前普遍执行的有关水深测量的国内外行业规范为依据,统计分析水深源数据的精度、密度等因素对海岛礁 DEM 精度的影响规律。实验结果表明:采用自适应三角网建模方法所建海岛礁 DEM 的精度要优于规则三角网 DEM 的精度;执行我国海道测量规范所获取的水深源数据所建 DEM 精度,要优于国际海道测量标准一等要求的源数据所建模型精度,略低于特等要求下的源数据所建模型精度。Based on the accuracy requirements of the island DEM ’s construction,the influence of the depth source data quality on the accuracy of the island DEM is quantitatively analyzed. The basic process of island DEM’s construction is sorted out,and the influencing factors of the accuracy of the island DEM are analyzed. Then based on the current domestic and international standards for depth data measurement,the influence of depth source data accuracy and density on the accuracy of the island DEM are statistically analyzed.Experimental results show: The accuracy of the island DEM built by adaptive triangulation modeling method is better than that built by regular triangulation modeling method;The accuracy of the DEM constructed by source depth data obtained by China’s hydrographic measurement specifications is better than that obtained by the first-class requirements of the international hydrographic measurement standard,yet slightly lower than that obtained by the top grade requirements of the international hydrographic measurement standard.

关 键 词：数字高程模型 海岛礁 精度控制 水深源数据 自适应三角网 

分 类 号：P231.6[天文地球—摄影测量与遥感]