论文标题
Kinneret湖中声场的相空间表示
Phase space representation of sound field in the Lake Kinneret
论文作者
论文摘要
该论文介绍了Kinneret湖（以色列）垂直阵列记录的脉冲声场的分析。从接收场的复杂幅度的传统表示作为深度和时间的函数到代表相空间“深度 - 角度 - 时间”中场分布的函数的过渡。由于缺乏多径和苛性碱问题，相位空间中的声场分布对环境干扰不太敏感，因此比配置空间更可预测。该过渡是使用量子理论中开发的相干状态扩展进行的。相位空间中的场强度的发现分布与理想化的环境模型执行的计算一致。结果表明，该分布可以作为解决源本地化问题的输入。数据处理的结果证明了使用相干态膨胀来隔离给定射线梁形成的场分量的可能性。
The paper presents the analysis of pulsed sound fields recorded by a vertical array in the Lake Kinneret (Israel). The transition from the traditional representation of the complex amplitude of the received field as a function of depth and time to a function representing the field distribution in the phase space `depth - angle - time' is considered. Due to the absence of multipath and problems with caustics, the sound field distribution in phase space is less sensitive to environmental disturbances and therefore more predictable than in configuration space. The transition is carried out using the coherent state expansion developed in the quantum theory. The found distribution of the field intensity in the phase space agrees with the calculation performed with an idealized environmental model. It is shown that this distribution can be taken as the input for solving the problem of source localization. The results of data processing demonstrate the possibility of using the coherent state expansion for isolating the field component formed by a given beam of rays.
