风浪对众包测深数据的精度影响分析  

Analysis on the Influence of Wind Waves on the Precision of Crowdsourced Bathymetric Data

作　　者：袁浩 贾帅东[1,2] 张立华 刘一帆[3] YUAN Hao;JIA Shuaidong;ZHANG Lihua;LIU Yifan(Department of Military Oceanography and Hydrography,Dalian Naval Academy,Dalian 116018,China;Key Laboratory of Hydrographic Surveying and Mapping of PLA,Dalian 116018,China;Command Support Group of the Naval StaffGovemment,Beijing 100841,China)

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

出　　处：《海洋测绘》2020年第6期34-38,共5页Hydrographic Surveying and Charting

基　　金：国家自然科学基金(41901320,41871369,41774014)。

摘　　要：针对当前众包测深数据精度难以掌控导致其难以应用的现状,通过构建船舶横摇姿态计算模型,分析了风浪这一重要海洋环境因素对众包测深数据精度的影响程度,得出了众包测深数据的推荐风浪条件和最低要求风浪条件。实验结果表明:①风浪等级增大,各测深点水深测量偏差随之加大,符合《海道测量规范》测深限差要求的测深点数量也随之减少,且在海底倾斜越严重的海域,表现更加明显;②3级风2级浪条件下的众包测深数据可满足限差要求;4级风3级浪时众包测深数据在不同海底倾斜程度下,满足限差要求的数据量不一样;5级以上风4级以上浪在海底倾斜程度超过7.5°时多数测深点不能满足限差要求。Aiming at the present situation that the quality of crowdsourced bathymetric(CSB)data is hard to be controlled,the critical factorsof the marine environment is analyzed for influencing the quality of the CSB data,and then the recommended conditions and the worst conditions of the wind and wave are respectively explored for crowdsourced bathymetry by constructing two relevant models to simulate and calculate shiprolling attitude.The experimental results demonstrated that:(1)The depth offsets of each sounding point increased with the increase of wind-wave level,but the number of sounding points conforming to the sounding error limit of Specifications for hydrographic survey decreased,andit obviouslyperform in the serious submarine slope.(2)CSB data under the condition of level-3 wind and level-2 wave can meet the requirements;the number of the CSB data which conform the limit under the condition of the level-4 wind and level-3 wave will be changed with the change of different slope.After the level-5 wind and level-4 wave,most sounding points cannot meet the requirement when the slope is more than 7.5°.

关 键 词：海洋测量 众包测深 单波束测深 风浪 船舶姿态 

分 类 号：P229.3[天文地球—大地测量学与测量工程]