舰船辐射噪声对声纳作用距离影响的不确定性研究

为了研究目标舰船辐射噪声对声纳作用距离产生的影响,用蒙特卡洛方法对目标航速进行模拟。通过经验公式得出舰船的辐射噪声级并进行统计分析,得出舰船辐射噪声的概率分布直方图,由此可以导出被动声纳作用距离的概率分布直方图。相对于传统的声纳作用距离预报结果,该方法给出的作用距离预报结果是一个满足某一分布的随机变量,而非一个确定的值,为作用距离的预报提供了概率的依据,为艇指挥员的决策提供了定量信息。同时,通过计算得出舰船航速的均方差与声纳作用距离的均方差基本成线性递增关系。

Uncertain Effect of Ship's Radiate Noise of Sonar Detecting Range

In order to research the affection of ship's radiate noise on sonar detecting range, this paper simulates the ship's velocity by Monte Carlo method. By experience formula to calculate ship's radiate noise, and make statistics analyze, it derives its probability distributing histogram, and then, a passivity sonar detecting range probability distributes histogram. Comparing it with the method of classic sonar detecting range prediction, this method gives a variable but not a certain value. It provides some basis of sonar detect range prediction for commanders with quantitative messages. And based on these, it derives that the standard variance of ship's velocity and the same of sonar detect range are linear increased.