| 题名 | 基于矢量水听器的岸站声纳模拟器与强干扰对消技术研究 |
| 作者 | 王千喜 |
| 学位类别 | 博士 |
| 答辩日期 | 2007-02-27 |
| 授予单位 | 中国科学院声学研究所 |
| 授予地点 | 声学研究所 |
| 关键词 | 矢量水听器 模拟器 自适应波束对消 并行技术 |
| 其他题名 | reseach on sonar simulator and noise cancelling |
| 学位专业 | 信号与信息处理 |
| 中文摘要 | 矢量水听器由传统的无指向性声压水听器和具有与频率无关的偶极子自然指向性的质点振速水听器复合而成，它可以空间共点、同步测量声压和质点振速的各正交分量，从而得到含有声源强度信息和方位信息的声强矢量。到目前为止，原先困扰矢量水听器发展的水介质中质点振速测量的复杂问题已经解决，从而为矢量水听器走向工程应用扫清了最大的障碍。本文就是在此背景下展开的。本文的主要工作和贡献如下：利用矢量水听器波束形成后背景噪声随积累时间的增加而减小的特点，提出了一种波束域DICANNE系统，并对该算法进行了理论分析和数据仿真；将自适应波束对消引入到矢量水听器基阵中。进行了自适应噪声抵消的理论分析—平稳的噪声抵消和参考输入中泄露信号成分的影响，并对算法进行了仿真。提出了一种适合于矢量水听器基阵的模拟器实现方法。该方法解决了矢量阵中宽带信号的 移相问题，时延精确控制问题和宽带噪声的谱状控制问题。 |
| 英文摘要 | The vector hydrophone is combined by traditional and omnidirectional pressure hydrophone and particle velocity hydrophone,which has natural dipole independent of frequency band.The vector hydrophone co-locating and simultaneously measures pressure and particle velocity,so acoustic intensity vector is obtained by those information,which consists of intensity and direction of sources.At present,complexity of measuring particle velocity in water was resolved,which was blocked development of the vector hydrophone,so that to clear away the maximum roadblock for application to underwater acoustic engineering of the vector hydrophone.The main content and contributions in this paper are as follows:Paper give a method to design vector-hydrophone array simulator. By the method , we can deal with the problem of transposition . the high delay accuracy and frequency spectrum form of ambient noise can be obtained.Noise is decreased with time-bandwidth product increased in vector-hydrophone array beam-form. Because of this characteristic, adaptive noise cancelling is applied to vector-hydrophone array noise cancelling. Paper presents theoretical analysis of adaptive noise cancelling which includes the stationary noise cancelling solutions and the effects of signal components in the reference input. |
| 语种 | 中文 |
| 公开日期 | 2011-05-07 |
| 页码 | 134 |
| 内容类型 | 学位论文 |
| 源URL | [http://159.226.59.140/handle/311008/18]  |
| 专题 | 声学研究所_声学所博硕士学位论文_1981-2009博硕士学位论文 |
| 推荐引用方式 GB/T 7714 | 王千喜. 基于矢量水听器的岸站声纳模拟器与强干扰对消技术研究[D]. 声学研究所. 中国科学院声学研究所. 2007. |
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