| 一种被动拖曳声纳阵列信号模拟器设计 |
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| 引用本文： | 刘清宇,李磊,蔡惠智.一种被动拖曳声纳阵列信号模拟器设计[J].声学技术,2009,28(4):463-466. |
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| 作者姓名： | 刘清宇 李磊 蔡惠智 |
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| 作者单位： | 1. 海军装备论证中心,北京,100073
2. 中国科学院声学研究所,北京,100190 |
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| 摘 要： | 声纳基阵信号模拟器是一种实用的可仿真实际检测目标及使用环境的阵元级信号发生器。设计的被动拖曳声纳阵列信号模拟器，仿真了拖曳阵的拖船干扰时域信号和空间传播特性、目标辐射信号以及环境噪声。通过预设定拖船干扰宽带功率谱，以AR模型拟合该功率谱，利用海底、海面对声场的一次反射作用仿真了拖船干扰的空间多途信道。采用插值滤波器，解决了宽带信号阵元间延时的时延精确控制问题。
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| 关 键 词： | 拖曳线列阵声纳 插值滤波器 声纳模拟器 AR模型 |
| 收稿时间： | 2009/1/22 0:00:00 |
| 修稿时间： | 2009/4/25 0:00:00 |
The array signal simulator design of passive towed sonar |
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| LIU Qing-yu,LI Lei and CAI Hui-zhi.The array signal simulator design of passive towed sonar[J].Technical Acoustics,2009,28(4):463-466. |
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| Authors: | LIU Qing-yu LI Lei and CAI Hui-zhi |
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| Affiliation: | LIU Qing-yu, LI Lei , CAI Hui-zhi (1. Navy Research Center, Beijing 100073, China; 2. Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China) |
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| Abstract: | The array signal simulator is a useful signal generator which can simulates received signal. The sonar simulator in this paper simulates the towed ship radiated noise in time domain and the space propagation characteristics, the target signal and the sea noise. Referring to the simulation of the towed ship noise, ECS model is used to set the power spectrum shape of wideband signal, AR model is used to simulate the power spectrum, and the image mirror of the first reflection from the sea surface and bottom is computed to simulate the multipath channel. The simulator uses the interpolation filter to simulate the precise time delay of wideband signal between the array elements. |
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| Keywords: | towed line array sonar interpolation filter sonar simulator AR Model |
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