主动声纳探测距离预报仿真研究

声纳探测距离受水文条件的影响是很大的，如声速梯度、海况、海底底质等。文中研究主动声纳探测距离预报技术，以声纳方程作为主动声纳探测距离预报的理论依据，首先对海洋声学环境建立数学模型，仿真计算出与声纳探测距离预报有关的几个参数：传播损失、混响级、潜艇目标强度，最后结合声纳的性能参数，预报出在不同海域水文条件下的探测距离。利用文中的方法对某型主动声纳探测距离进行预报。在不同水文条件下探测距离预报误差不大于10％。该项内容研究对于反潜战具有重大的意义。

The Simulation Research on Forecasting the Detection Range of Active Sonar

The detection range of sonar is greatly affected by hydrographic conditions such as sound velocity gradient, sea conditions and seabed material. Forecasting techniques of the detection range of active sonar are studied in the paper. With sonar equation as the basis forecasting the detection range of active sonar, an acoustical environment model of ocean is established first. Then several parameters concerning the forecast of the detection range of sonar are calculated, such as transmission loss, reverberation level, and the target strength of a submarine. Finally, based on sonar's performance parameters, detection ranges of sonar in different hydrographic condition of the ocean are forecasted. Through comparing forecasted detection range with actual detection range, the detection ranges of some type of active sonar are forecast under different hydrographic conditions using this method introduced in the paper, with the error less than 10%. The study is of great importance in anti-submarine warfare.