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学术预告:基于实际数据的运动目标定位方法——理论与实验
来  源: 机械工程学院 日  期: 2017-11-29 点击率: 1720
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    Data-based source localization for a moving source: Theory and experimental results
    基于实际数据的运动目标定位方法:理论与实验
    
    T.C Yang/杨子江教授
    浙江大学
    
    报告时间:11月29日(周三)下午14:00-16:00
    报告地点:北门重点实验室  A206会议室
    
    报告摘要:
    Matched field/mode processing was introduced sometimes ago for source localization based on the replica field for a hypothesized source location that best matches the acoustic data received on a vertical or horizontal line array. However, this method has the well-known mismatch problem, due to the fact that the acoustic environment used to calculate the replica field is often time-varying and not known accurately. A data-based matched-mode source localization method is introduced for a moving source, using mode wavenumbers and depth functions estimated directly from the moving source data, without requiring any environmental acoustic information and assuming any propagation model to calculate the replica field.  The method is in theory free of the environmental mismatch problem since the mode replicas are estimated from the same data used to localize the source. As is the case for many methods, there are technical problems when applying the theory to the data. The basic theory is presented in this talk as well as some experimental results showing the technical problems and how they have been solved so far.
    
    报告人简介:
    T. C. Yang教授,1971年获得美国罗彻斯特大学高能物理专业博士学位,在欧洲和美国多所高校物理系拥有多年的工作经验;1980年进入美国海军研究所,工作时间长达32年,期间担任声信号处理等学科带头人;后任台湾中山大学海洋科学学院海下科技暨应用海洋物理研究所荣誉讲座教授。现任浙江大学信息与电子工程学院教授,主要研究方向包括:(1)水下环境对声传播和组网的影响;(2)水下分布式组网传感器信号处理;(3)水下目标追踪和定位;(4)分布式系统开发和性能分析;另外在地声学反演、波导不变量、内波影响、北极声学问题等方面也颇有建树;在国际知名期刊发表论文200余篇,是美国声学学会会士。
    
    邀请人:卢奂采教授、刘祖斌博士
    特种装备制造与先进加工技术教育部重点实验室、“声学与振动”实验室