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多通道运动声呐混响仿真 被引量:10

Simulation of multi-channel moving sonar reverberation
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摘要 提出了一种直观,易于实现的方法完成多通道声呐混响信号的仿真,采用空间非均匀方式分布散射元,直接对散射元的回波信号进行迭加。仿真综合考虑了多种影响混响的因素,包括发射信号本身的参数,声呐平台的运动,海洋环境等。对仿真信号的平均混响级,瞬时值和包络值概率密度分布,空间相关系数,空时二维谱几个方面进行了检验,结果与理论分析和经验值具有较好的一致性,证明了仿真的有效性。该仿真数据能够满足空时自适应处理(STAP)方法研究的需要。 An intuitive and easy-implemented approach of simulation of multi-channel sonar reverberation is proposed, which uses the nonuniform distribution of scatters in space and the direct superposition of the scatters' echoes. Many factors which will influence the reverberation are considered in the simulation such as the parameters of transmission signal, the motion of the platform, the ocean environment, etc. The simulated signal's average reverberation level, distribution of probability density of transient value and envelope, spatial correlative coefficient, space-time spectrum are tested, and the results are consistent with the theoretical analysis and the experience well. The validity of the simulation is proved. The simulated data can meet the demand of research on space-time adaptive processing(STAP).
机构地区 海军工程大学
出处 《舰船科学技术》 北大核心 2007年第4期117-120,124,共5页 Ship Science and Technology
基金 国家安全重大基础研究资助项目(5131603ZT40317)
关键词 混响 仿真 多通道 空时自适应处理 reverberation simulation multi-channel STAP
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参考文献9

  • 1William H.An Oceanic Reverberation Model[J].IEEE Journal of Oceanic Engineering,1984,9(2):63-72.
  • 2Leviandier L,Doisy Y.Generation of Reverberation Time Series for Activated Low Frequency Sonars[J].ECUA' 2002,2002:24-27.
  • 3王新晓,黄建国,张群飞.海洋混响仿真技术研究[J].声学与电子工程,2002(3):27-30. 被引量:21
  • 4Chamberlain S G,Galli J C.A Model for Numerical Simulation of Nonstationary Sonar Reverberation Using Linearspectral Prediction[J].IEEE Journal of Oceanic Engineering,1983,8(1):21-36.
  • 5Luby J C,Lytle D W.Autoregressive Modeling of Nonstationary Multibeam Sonar Reverberation[J].IEEE Journal of Oceanic Engineering,1983,12(1):116-129.
  • 6徐新盛,张燕,李海森,杨士莪.海底混响仿真研究[J].声学学报,1998,23(2):141-148. 被引量:35
  • 7Klemm R.Principles of Space-time Adaptive Processing[M].London:the Institution of Electrical Engineers,2002.
  • 8尤立克.水声原理[M].哈尔滨船舶工程学院出版社,1990..
  • 9奥里雪夫斯基.海洋混响的统计特性[M].北京:科学出版社,1977.

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