基于声速梯度的水文条件判定方法

海水是一种不均匀介质,尤其是温度随深度的不均匀分布引起了声速随深度分布的不均匀性,声速分布的不均匀性对水声传播有着重要的影响,进而影响声纳探测距离。针对声纳试验中水文条件判定问题,提出一种基于声纳梯度值的水文条件判定方法,根据声速梯度值区间范围及是否存在声速跃变层,判定良好、中等、恶劣三种典型水文条件,可作为水文条件判定的一种依据,为声纳装备试验、训练提供参考。

Hydrological Condition Determination Method Based on Sound Velocity Gradient

Seawater is an inhomogeneous medium,especially the uneven distribution of temperature with depth causes the uneven distribution of sound velocity with depth.The unevenness of sound velocity distribution has an important influence on the underwater acoustic propagation,which in turn affects the sonar detection distance.Aiming at the problem of hydrological condition determination in sonar test,a hydrological condition determination method based on sonar gradient value is proposed.According to the range of sound velocity gradient value and whether there is a sound velocity transition layer,three typical hydrological conditions of good,medium and bad are determined.It can be used as a basis for judging hydrological conditions and provides reference for sonar equipment testing and training.