一种被动拖曳声纳阵列信号模拟器设计  

The array signal simulator design of passive towed sonar

作　　者：刘清宇[1] 李磊[2] 蔡惠智[2] 

机构地区：[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

出　　处：《声学技术》2009年第4期463-466,共4页Technical Acoustics

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。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.

关 键 词：拖曳线列阵声纳 插值滤波器 声纳模拟器 AR模型 

分 类 号：TN911[电子电信—通信与信息系统]