宽带噪声水下对抗仿真技术研究

在阵元域及声纳方程上给出宽带阻塞干扰器对鱼雷自导接收机干扰作用的模型，研究了其水声模拟的方法和攻击方、防御方平台及宽带阻塞干扰实现的仿真模型，并给出仿真宽带干扰的发射机控制模型。利用基于以上模型实现的一个半实物仿真实验系统进行宽带阻塞干扰对抗实验，仿真实验结果表明：该方法对仿真宽带阻塞干扰器及鱼雷反对抗等均有良好的仿真效果。最后给出的效能函数可以用于定量地评定宽带阻塞干扰、鱼雷自导性能与半实物仿真实验系统性能。

Research on the Simulation Methods of Broadband Jammer Interference and Underwater Acoustic Countermeasure

The simulation of the interference and countermeasure of underwater warfare in laboratory has received significant attention in developing and measuring the homing system of an underwater vehicle. In this paper, the models of jammer function based on element space are given for explaining the jammer's effects on covariance matrix and its eigen-value of the received signal. The jammer function model based on sonar equations is also given and the efficiency of interference in joint range-bearing space is defined. The models of escaping counter-manoeuvres and the countermeasures of the attacker and the defender are described. The models of jammer in time domain and frequency domain, and the attenuation control models of its transmitter are introduced. The relationship between the dynamic range of its electronic system and the simulation range are discussed. Based on the above models, a simulation system that can be applied to the broadband jammer interference in acoustic field simulation and hardware-in-the-loop simulation is presented. The simulation results are in good agreement with the marine test results. Finally, the general efficiency function is given for evaluating the efficiency of the interference, the countermeasure and the simulation system.