摘要
基于实测数据,将测区内声速剖面进行EOF表示,进而采用常梯度分层声线跟踪法对EOF表示的声速剖面和实测声速剖面进行比对,统计有效波束比。比对结果表明:采用EOF表示的声速剖面进行的水深数据改正能够满足多波束水深测量的精度指标要求,论证了采用EOF方法表示多波束勘测水深声速剖面场的有效性。
In this paper,sound speed profiles are described by empirical orthogonal function （EOF）.Comparison results of real sound speed profiles and sound speed profiles represented by EOF are obtained by the constant gradient sound ray tracing method.By analyzing the ratio of the effective beams,the conclusions show that the results of sound velocity corrections with sound speed profiles represented by EOF can effectively meet the accuracy requirements of multibeam bathymetric data.
出处
《海洋测绘》
2014年第6期21-24,28,共5页
Hydrographic Surveying and Charting
基金
国家自然科学基金(41074002)
关键词
EOF声速剖面
声速改正
比对
精度
EOF
sound speed profiles
sound velocity corrections
comparison
accuracy
