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相关测速声纳工作原理及海试验证
引用本文:冯雷,王长红,汪玉玲,邱薇.相关测速声纳工作原理及海试验证[J].声学技术,2005,24(2):70-75.
作者姓名:冯雷  王长红  汪玉玲  邱薇
作者单位:中国科学院声学研究所,北京,100080
基金项目:国家863讨划资助项目(2003AA604030)
摘    要:“波形不变性”原理是相关测速声纳的基本工作原理,利用射线声学方法对此原理进行了论述。分析了相关测速声纳的两种设计思路:时间相关和空间相关。提出了采用空间相关的思路设计相关测速声纳样机的具体方法,包括阵型设计、信号设计和软件工作流程,并分别在西太平洋和中国南海进行了两次试验。将海试数据结果与声多普勒流速剖面仪和差分GPS从速度大小和方向上进行了比较,证明了相关测速的可行性,验证了流混响和底混响的相关理论模型、声纳阵设计以及信号处理方法的正确性。

关 键 词:相关测速声纳  “波形不变性”原理  海上试验
文章编号:1000-3630(2005)02-0070-06
收稿时间:2004/7/20 0:00:00
修稿时间:2004/10/15 0:00:00

Velocity measurement with correlation sonar and sea test verifciation
FENG Lei,WANG Chang-hong,WANG Yu-ling and QIU Wei.Velocity measurement with correlation sonar and sea test verifciation[J].Technical Acoustics,2005,24(2):70-75.
Authors:FENG Lei  WANG Chang-hong  WANG Yu-ling and QIU Wei
Affiliation:Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080, Cgina;Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080, Cgina;Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080, Cgina;Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080, Cgina
Abstract:Waveform invariance' is the basic principle of correlation sonar. A ray theory based method is adopted to explain the principle. Two approaches, temporal correlation and spatial correlation, to the design of correlation sonar are analyzed. Criterion for designing a prototype based on spatial correlation is proposed, involving transducer geometry, signal design and software process. The prototype correlation sonar has undergone two tests at the west Pacific Ocean and the South China Sea respectively. Correlation function of the test data is used to confirm the ' waveform invariance'. By comparing the velocity results obtained by the correlation sonar with those by acoustic Doppler current profiler ( ADCP) and differential GPS ( DGPS) respectively, the feasibility of the correlation sonar for measuring current velocity and ship velocity, the design principles, and signal processing techniques used are verified.
Keywords:correlation sonar velocity log  waveform invariance'  sea test
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