深海声速剖面对吊放声纳探测距离的影响研究

摘要

It is very cursory to confirming the depth of laying downwards. The detection range and distance is min-ished seriously because of confirming simply the detection depth of the Dipping Sonar. The effect of sound speed pro-files in blue water on the detection range of Dipping Sonar was imitated by Ray Trace model. After acoustic propaga-tion characteristics of different sound speed profiles in the blue water were analyzed, the sonar, underwater acoustics environment and target were modeled and calculated, and the active detection range of Dipping Sonar of different sound speed profiles was simulated by Ray Trace model. At last, the effect of the depth in the water of active Dipping Sonar on the detection range was analyzed. The result shows that performance of sonar can be well exerted and targets of different depth can be best detected when finding the optimum detection depth of different sound speed profiles.%关于探海环境下声纳目标探测优化问题,针对传统吊放声纳的下放深度比较粗略,一般是在声道轴处上下一定的范围,并考虑目标可能的深度.简单地确定声纳探测深度,会严重减小声纳的有效搜索距离和搜索范围.利用射线模型仿真研究了深海中不同的声速剖面对吊放声纳探测距离的影响.通过分析深海不同声速剖面中的声传播特性,并对声纳、水声环境以及目标的模型化计算,利用射线模型仿真了几种不同声速剖面情况下吊放声纳的主动作用距离,最后分析了吊放声纳入水深度对深海目标主动作用距离的影响.仿真结果表明,改进方法可找到最佳的探测深度,并能够发挥声纳对目标探测性能,得到对不同环境下目标的最好探测.