跃变层对主动声纳搜潜概率影响仿真研究

Simulation Research on the Effects of Thermocline on Active Sonar Searching Submarine

结合潜艇利用跃变层规避主动声纳探测的战术背景,对跃变层对主动声纳的搜潜概率影响进行了研究.建立了主动声纳搜潜的数学模型,利用平滑平均声场理论估算了跃变层时的声传播损失,推导了主动声纳的探测概率公式,分析了跃变层深度、厚度及声速跃变差对主动声纳搜潜概率的影响,并进行了仿真.结果表明:跃变层对主动声纳的搜潜概率有明显影响.

According to the tactical background that submarines use thermocline to escape active sonar, the effect of thermocline on active sonar searching submarine was studied. The mathematical models were built firstly; and according to smooth averaged sound field in shallow water the transmission loss was given out. On these bases, the detection probability of active sonar was then deduced. The effects of thermocline＇s depth, thickness and sound velocity change on searching submarine probability were discussed, and lastly simulations were made. The research results show that thermocline has an important effect on the searching submarine effectiveness of active sonar. It is of practical guiding significance in antisubmarine battles and training.