underwater acoustics

It agrees with the results of experiment for speed of sound in water within 0～20℃,compensating the defect of Wilater s formula which has larger deviation with experiments in this temperature range.

在不同温度下水的密度已有大量的实验数据,本文通过水中声速与其密度的关系式, 得到了声速随温度变化的拟合公式。

After an introduction to the basic features of underwater acoustics the latest progress in R&D of underwater acoustic channels,acoustical systems and detection/recognition of underwater acoustic signals are reviewed.

文章介绍了水声学研究的对象和它的特点，综述了水声信道、声系统及水声信息检测识别等方面研究的最新进展。

Simulation about the target echo characteristics is a research direction of underwater acoustics.

水中目标的回波特征仿真是水声学的一个研究方向,其形成的水下目标模拟技术可应用于海上声学试验设计、水声设备考核、水下声目标欺骗等领域。