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Summation of modes of a sound signal in a shallow sea

机译:浅海中声音信号的模式汇总

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Results of an experiment on the summation of selected modes of a sound signal in a shallow sea (the Barents Sea, a sea depth of 120 m, a 17-km-long path) are presented. The experiment is performed with the use of a point source generating a broadband pulsed signal with a duration of 5 s and a linear frequency modulation within 100-300 Hz. The mode selection in the in-sea experiment is achieved using a vertical antenna array (32 hydrophones, length of 96 m). It is shown that the mode signals selected at the end of the path are formed with a part of the path. The modes are summed coherently (with the use of two methods) and incoherently. The noise immunity of the mode summation is estimated.
机译:给出了在浅海(巴伦支海,海深120 m,路径长17公里)中选择的声音信号模式总和的实验结果。使用点源进行实验,该点源生成持续时间为5 s的宽带脉冲信号和100-300 Hz内的线性频率调制。使用垂直天线阵列(32个水听器,长度为96 m)可以在海中进行模式选择。示出了在路径的末端选择的模式信号由路径的一部分形成。模式是相干相加(使用两种方法)和不相干的。估计模式求和的抗噪性。

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