| 声学法深海热液速度场测量重建算法研究 |
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| 引用本文： | 白 燕,毛 洁,樊 炜,潘华辰,刘云峰. 声学法深海热液速度场测量重建算法研究[J]. 海洋科学, 2011, 35(3): 42-49 |
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| 作者姓名： | 白 燕 毛 洁 樊 炜 潘华辰 刘云峰 |
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| 作者单位： | 1. 杭州电子科技大学,机械电子工程研究所,浙江,杭州,310018
2. 浙江工业大学特种装备制造与先进加工技术教育部重点实验室,浙江,杭州,310032 |
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| 基金项目： | 国家863 计划项目(2007AA09Z213); 浙江省科技计划钱江人才计划项目(2008R10020); 国家自然科学基金重点项目(40637037); 杭州电子科技大学浙江省重中之重学科“海洋机电装备技术”开放基金 |
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| 摘 要： | 介绍了利用声学法测量深海热液速度场的基本原理.利用往返飞渡时间差与流场速度的关系,应用反问题求解技术重建测量区域的速度场.应用最小二乘法对两种典型的热液口速度场模型进行了仿真重建,分析了换能器数量、实验测量误差以及换能器的布放对重建结果的影响,并对重建结果进行了流量分析.仿真重建的绝对误差、相对误差以及流量分析结果表明...
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| 关 键 词： | 热液 速度场 声波 重建算法 最小二乘法 |
| 收稿时间： | 2010-03-15 |
| 修稿时间： | 2010-12-31 |
Reconstruction algorithm for acoustic measurement of velocity field of deep-sea hydrothermal vents |
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| BAI Yan,MAO Jie,FAN Wei,PAN Hua-chen,LIU Yun-feng. Reconstruction algorithm for acoustic measurement of velocity field of deep-sea hydrothermal vents[J]. Marine Sciences, 2011, 35(3): 42-49 |
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| Authors: | BAI Yan MAO Jie FAN Wei PAN Hua-chen LIU Yun-feng |
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| Affiliation: | BAI Yan1,MAO Jie1,FAN Wei1,PAN Hua-chen1,LIU Yun-feng2(1.School of Mechanical Engineering,Hangzhou Dianzi University,Hangzhou 310018,China,2.Key Laboratory of Special Purpose Equipment and Advanced Processing Technology of Ministry of Education,Zhejiang University of Technology,Hangzhou 310032,China) |
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| Abstract: | The basic theory of acoustic velocity field measurement in deep-sea hydrothermal vents was introduced. The time of flight (TOF) of acoustic signals through hydrothermal vents was dependent on temperature and velocity. The velocity field was reconstructed by inverse problem solving techniques based on the relationship between the round-trip TOF difference and velocity of flow. The reconstruction of velocity field using the least square method was presented. At the same time, flow flux of reconstruction results was analyzed. The results show that the least square method has good accuracy. Increase of the number of acoustic transducers and mesh density can improve the reconstruction accuracy effectively. |
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| Keywords: | hydrothermal vents velocity field acoustic reconstruction algorithm least square method |
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