| 深远海海域多波束水深测量声速剖面获取方法研究 |
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| 引用本文： | 张翼飞,程都,李绍奇,吴德帅.深远海海域多波束水深测量声速剖面获取方法研究[J].海洋测绘,2020,40(4):27-31. |
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| 作者姓名： | 张翼飞 程都 李绍奇 吴德帅 |
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| 作者单位： | 92192部队,浙江宁波 315122;91937部队,浙江舟山 316000 |
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| 摘 要： | 声速是影响多波束勘测精度的重要的外部因素,它决定着声线跟踪的精度,并最终影响到测深精度。由于停船投放CTD时间成本比较高,探索经济高效的远海走航式多波束水深测量,特别是航渡测量期间的声速剖面获取方法成为现场测量人员急需解决的问题。在对HYCOM/WOA13数据与现场CTD数据进行了数据偏差分布、相关性等比对,验证HYCOM/WOA13数据适用性的基础上,提出了基于HYCOM模式数据、WOA13同化数据及单点历史CTD数据与现场XCTD/XBT多源组合的远海走航式多波束水深测量声速剖面获取方法。对比表明,该多源组合的声速剖面能较好反映施测位置的声速剖面情况,该方法对提高远海水深测量的精度和经济效益具有一定的借鉴意义。
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| 关 键 词： | 航渡测量 深水多波束测深系统 HYCOM WOA13 声速剖面 |
Research on Acquisition Method of Sound Velocity Profile for the Multibeam Sounding System in the Deep Sea |
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| ZHANG Yifei,CHENG Du,LI Shaoqi,WU Deshuai.Research on Acquisition Method of Sound Velocity Profile for the Multibeam Sounding System in the Deep Sea[J].Hydrographic Surveying and Charting,2020,40(4):27-31. |
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| Authors: | ZHANG Yifei CHENG Du LI Shaoqi WU Deshuai |
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| Affiliation: | 92192 Troops,Ningbo 315122 ,China;91937 Troops,Zhoushan 316000 ,China |
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| Abstract: | As a key factor that affects the accuracy of multibeam survey,sound velocity determines the accuracy of sound ray tracking and finally affects the bathymetry precision. Considering static CTD sampling of the water column is generally a detriment to survey efficiency,finding a more economic and efficiency method to get the sound velocity profile becomes a very urgent study task for field surveyors.With the comparison of data deviation distribution and correlation between HYCOM ,WOA13 and field CTD data,the applicability of HYCOM and WOA13 data is discussed in this paper.Furthermore,a multi-source optimum combination of HYCOM,WOA13,historical CTD data and field XCTD/XBT data is proposed to get the most reasonable sound velocity profile.The results show that this method can get a more accurate sound velocity profile for multibeam sounding system.This paper can offer some reference on improving accuracy and economic benefit of deep-water bathymetric survey. |
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