| 声速剖面EOF表示对多波束水深数据的影响研究 |
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| 引用本文： | 孙文川,暴景阳,金绍华.声速剖面EOF表示对多波束水深数据的影响研究[J].海洋测绘,2014,34(6):21-24,28. |
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| 作者姓名： | 孙文川 暴景阳 金绍华 |
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| 作者单位： | 海军大连舰艇学院海洋测绘系,辽宁大连,116018 |
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| 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。
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| 关 键 词： | EOF声速剖面 声速改正 比对 精度 |
Effects of Sound Speed Profiles Represented by EOF to Multibeam Bathymetric Data |
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| SUN Wenchuan,BAO Jingyang,JIN Shaohua.Effects of Sound Speed Profiles Represented by EOF to Multibeam Bathymetric Data[J].Hydrographic Surveying and Charting,2014,34(6):21-24,28. |
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| Authors: | SUN Wenchuan BAO Jingyang JIN Shaohua |
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| Institution: | (Department of Hydrography and Cartography, Dalian Naval Academy, Dalian 116018 ,China) |
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| Abstract: | 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. |
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| Keywords: | EOF sound speed profiles sound velocity corrections comparison accuracy |
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