| 多波束换能器吃水误差在分层计算的影响分析 |
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| 引用本文： | 肖元弼,彭认灿,董箭,暴景阳.多波束换能器吃水误差在分层计算的影响分析[J].测绘科学,2021,46(3):17-20. |
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| 作者姓名： | 肖元弼 彭认灿 董箭 暴景阳 |
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| 作者单位： | 海军大连舰艇学院军事海洋与测绘系,辽宁大连 116018;海军大连舰艇学院军事海洋与测绘系,辽宁大连 116018;海军大连舰艇学院海洋测绘工程军队重点实验室,辽宁大连 116018;武汉大学测绘学院,武汉430079 |
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| 基金项目： | 国家自然科学基金项目(41601498,41471380);国际重点研发计划资金项目(2017YFC1405505)。 |
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| 摘 要： | 针对传统多波束测深系统中对于换能器吃水改正中,存在误差影响下的声速剖面运用不当,并且未考虑声速分层影响,使得最终水深计算精度不高的问题。该文提出对多波束换能器吃水误差在水深分层计算中的影响进行探究,利用声速分层的计算方式结合吃水误差建立水深计算模型,设定不同吃水改正误差,得到观测偏差与吃水误差间的关系曲线并进行分析。实验表明:实际观测与理论观测深度的差值,受吃水误差的影响,增大速率随着吃水误差的增加会越来越快。
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| 关 键 词： | 吃水误差 多波束测深系统 回波时间 声速剖面 声速分层 |
Analysis on the influence of draft error of multi beam transducer in layered calculation |
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| XIAO Yuanbi,PENG Rencan,DONG Jian,BAO Jingyang.Analysis on the influence of draft error of multi beam transducer in layered calculation[J].Science of Surveying and Mapping,2021,46(3):17-20. |
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| Authors: | XIAO Yuanbi PENG Rencan DONG Jian BAO Jingyang |
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| Institution: | (Department of Military Oceanography and Hydrography&Cartography,Dalian Naval Academy,Dalian,Liaoning 116018,China;Key Laboratory of Hydrography Surveying and Mapping,Dalian Naval Academy,Dalian,Liaoning 116018,China;School of Geodesy and Geomatics,Wuhan University,Wuhan 430079,China) |
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| Abstract: | Due to the improper use of sound velocity profile under the influence of errors in the draft correction of transducers in traditional multi-beam sounding system,and the failure to consider the influence of sound velocity layering,the accuracy of final water depth calculation is not high.In this paper,the calculation model of water depth is established by using the layered calculation method of sound velocity and the draft error,and the correction error of different draft is set up.The relation curve between the observation deviation and the draft error is obtained and analyzed.The experiment shows that the difference between the actual observation depth and the theoretical observation depth is affected by the draft error,and the increase rate will be faster and faster with the increase of the draft error. |
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| Keywords: | draft error multi-beam sounding system echo time sound velocity profile sound velocity layers |
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