| 盐度和压强对布里渊雷达遥测海洋温度的影响 |
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| 引用本文： | 高玮,吕志伟,何伟明,董永康.盐度和压强对布里渊雷达遥测海洋温度的影响[J].哈尔滨工业大学学报,2008,40(3):354-357. |
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| 作者姓名： | 高玮 吕志伟 何伟明 董永康 |
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| 作者单位： | 1. 哈尔滨工业大学光电子技术研究所,哈尔滨,150001;哈尔滨理工大学应用物理系,哈尔滨,150080
2. 哈尔滨工业大学光电子技术研究所,哈尔滨,150001 |
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| 基金项目： | 国家自然科学基金
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哈尔滨工业大学优秀团队支持计划
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黑龙江省教育厅资助项目 |
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| 摘 要： | 为提高布里渊激光雷达测量较深海域的温度精度,建立了以布里渊频移、盐度和压强为独立变量的海水温度的经验方程,定量分析了温度随盐度、压强、布里渊频移的变化关系,讨论了盐度、压强以及布里渊频移对海水温度测量精度的影响,并计算了该方法测量温度的精度.研究表明利用布里渊散射测量温度受海水盐度和压强分布的影响较大,其测量精度亦受到限制,约为0.4℃.因此实际测量时应同时获得被测处的盐度及压强值,这样布里渊雷达测量海洋温度的精度将会提高到0.05℃.
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| 关 键 词： | 布里渊散射 布里渊雷达 布里渊频移 温度 盐度 压强 |
| 文章编号： | 0367-6234(2008)03-0354-04 |
| 修稿时间： | 2005年12月3日 |
Effects of salinity and pressure on the ocean temperature measurement by Brillouin lidar |
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| GAO Wei,LU Zhi-wei,HE Wei-ming,DONG Yong-kang.Effects of salinity and pressure on the ocean temperature measurement by Brillouin lidar[J].Journal of Harbin Institute of Technology,2008,40(3):354-357. |
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| Authors: | GAO Wei LU Zhi-wei HE Wei-ming DONG Yong-kang |
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| Affiliation: | 1(1.Institute of Opto-Electronics,Harbin Institute of Technology,Harbin 150001,China;2.Dept.of Applied Physics,Harbin University of Science and Technology,Harbin 150080,China) |
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| Abstract: | In order to raise the accuracy of temperature measurement in the deep ocean,an empirical equation for the seawater temperature as a function of Brillouin frequency shift,salinity,and pressure was derived.The dependences of the temperature on the salinity,pressure,and Brillouin shift were quantitatively analyzed.The influences of the variation of salinity and pressure on the uncertainty of temperature measurement were also discussed.The research shows that the accuracy of temperature measurement is limited by the distributions of the salinity and pressure of the ocean.The measurement uncertainty is approximately 0.4 ℃.Therefore,the salinity and pressure of the measured location should be determined simultaneously in the practical measurement.Thus the temperature resolution will be increased up to 0.05 ℃. |
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| Keywords: | Brillouin scattering Brillouin lidar Brillouin shift temperature salinity pressure |
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