| 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,(2):70~75 |
| 相关测速声纳工作原理及海试验证 |
| Velocity measurement with correlation sonar and sea test verifciation |
| 投稿时间：2004-07-20 修订日期：2004-10-15 |
| DOI： |
| 中文关键词: 相关测速声纳 “波形不变性”原理 海上试验 |
| 英文关键词: correlation sonar velocity log ‘waveform invariance’ sea test |
| 基金项目:国家863讨划资助项目(2003AA604030) |
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| 中文摘要: |
| “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。 |
| 英文摘要: |
| 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. |
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