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管节沉放对接中环境因素对声呐测距精度的影响*
引用本文:方长远,李惠明,梁国栋,赵建虎,刘国辉.管节沉放对接中环境因素对声呐测距精度的影响*[J].水运工程,2013(4):42-45.
作者姓名:方长远  李惠明  梁国栋  赵建虎  刘国辉
作者单位:1. 中交四航局第二工程有限公司,广东广州,510300
2. 中交第四航务工程局有限公司,广东广州,510231
3. 武汉大学测绘学院,湖北武汉,430079
基金项目:国家科技支撑计划资助项目(2011BAG07B01)
摘    要:为确保管节水下沉放对接中声呐定位系统的测距和定位精度,对影响声呐测距精度的主要环境因素进行了研究,分析了温度和盐度对声速的影响及其引起的声线弯曲对测距的影响、多路径效应对测距的影响和海水浑浊度对测距的影响,给出了对管节精确沉放和对接施工有指导性作用的结论和建议.

关 键 词:管节沉放  声呐定位  声线弯曲  多路径效应  浑浊度

Influence of environment factors on ranging accuracy in pipe sinking
FANG Chang-yuan,LI Hui-ming,LIANG Guo-dong,ZHAO Jian-hu and LIU Guo-hui.Influence of environment factors on ranging accuracy in pipe sinking[J].Port & Waterway Engineering,2013(4):42-45.
Authors:FANG Chang-yuan  LI Hui-ming  LIANG Guo-dong  ZHAO Jian-hu and LIU Guo-hui
Institution:Second Engineering Company of CCCC Fourth Harbor Engineering Co., Ltd., Guangzhou 510300, China;CCCC Fourth Harbor Engineering Co., Ltd., Guangzhou 510231, China;Second Engineering Company of CCCC Fourth Harbor Engineering Co., Ltd., Guangzhou 510300, China;School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China;School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China
Abstract:To ensure the accuracy of sonar positioning in pipe sinking, we study the influence of environment factor on the positioning. Based on the analysis of the influence of temperature and salt on the sound ray curve,multi-path effect and turbid degree, we draw some conclusions for pipe sinking and connecting construction.
Keywords:pipe sinking  sonar positioning  sounding ray  multi-path effect  turbid
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