一、引言 海洋中的声速深度分布直接关系到声波在海中的传播,因而影响水声设备的使用。对于海军反潜作战来说,声速的深度分布是很重要的参数之一。在海洋开发中,当涉及到水下定位时,也必须考虑因声速梯度引起的声线弯曲。总之,海洋中的声速分布是反映海水介质特性的一个重要参 I. Introduction The depth of sound velocity in the ocean is directly related to the propagation of sound waves in the sea, thus affecting the use of underwater acoustic equipment. For naval anti-submarine operations, the depth of sound velocity distribution is one of the most important parameters. In marine development, when it comes to underwater positioning, it is also necessary to consider the bending of sound waves caused by the sound speed gradient. In short, the distribution of sound velocity in the ocean is an important parameter reflecting the properties of seawater