声学的地的空间关联有重要含意为在水下深水里的目标察觉和其它应用。在这份报纸,深海的声学的地里的高紧张地区的空间关联被使用在华南海获得的试验性的数据调查。试验性的结果证明在不同范围和深度的空间关联系数的结构类似于深水里的传播损失结构。为这现象的主要原因被把正常模式理论与光线理论相结合分析。在高紧张地区的收到的信号主要包括被一组水运的模式的干扰与类似的阶段贡献的一或二主要脉搏,这被显示出。在一样的接收装置深度,但是在不同高紧张地区的水平纵的关联被分析。在一些位置,更多的脉搏因此由于底部思考和水平纵的关联系数减少在信号的到达结构被收到。收到信号的多路径到达结构与增加接收装置深度变得更复杂。
The spatial correlations of acoustic field have important implications for underwater target detection and other ap- plications in deep water. In this paper, the spatial correlations of the high intensity zone in the deep-water acoustic field are investigated by using the experimental data obtained in the South China Sea. The experimental results show that the structures of the spatial correlation coefficient at different ranges and depths are similar to the transmission loss structure in deep water. The main reason for this phenomenon is analyzed by combining the normal mode theory with the ray theory. It is shown that the received signals in the high intensity zone mainly include one or two main pulses which are contributed by the interference of a group of waterbome modes with similar phases. The horizontal-longitudinal correlations at the same receiver depth but in different high intensity zones are analyzed. At some positions, more pulses are received in the arrival structure of the signal due to bottom reflection and the horizontal-longitudinal correlation coefficient decreases accordingly. The multi-path arrival structure of receiving signal becomes more complex with increasing receiver depth.