【摘要】 研究了被动声呐探测距离预报的仿真技术。声呐最大作用距离受水文条件的影响是很大的,比如声速梯度、海况、海底底质等。首先分析海洋声学环境,提出一种计算声传播损失的模型,给出了它的原理及算法,然后以声纳方程为基础,利用优质因素值建立声纳作用距离探测的预报模型,并用VC完成该仿真软件的开发。最后针对目标辐射声源级、声速分布等不同的影响因素进行仿真,并给出仿真结果,为声纳的作用距离预报提供了有价值的参考。更多还原

【Abstract】 The simulation techniques for forecasting the detection range of passive sonar are studied in the paper. The detection range of sonar is greatly affected by hydrographic conditions such as sound velocity gradient,sea condi- tions and seabed material.The acoustical environment of ocean is analyzed first,and the model for computing the a- coustical transmission loss is proposed.Then based on the sonar equation,the prediction model of detection range of sonar using FOM is established,and the simulation software is developed in VC environment.Finally,aiming at dif- ferent influencing factors,such as sound level of the target and sound velocity,simulation is made,and the simula- tion results are given out,which provide valuable reference to the forecast of detection range of sonar.更多还原