基于以太网的鱼雷声自导电信号半实物仿真系统

由于鱼雷作战水声环境的复杂性，鱼雷声自导半实物( HWIL)仿真成为实验室环境下声自导系统设计与性能评估的重要手段。提出了一种基于以太网的分布式半实物仿真系统，采用电信号注入法模拟目标／背景信号，介绍了其构成方法及工作原理；详细讨论了窄带点目标、窄带体目标、混响和海洋噪声等主要目标／背景信号的水声仿真模型；给出了使用流水线阵列处理的仿真信号源硬件系统设计，并提出了延时滤波算法实现了多路仿真信号源的实时同步输出。相应的信号仿真试验结果证明了采用电子注入法实现声自导半实物仿真系统的有效性。

HWIL Electrical Signal Simulation for Torpedo Acoustic Homing System Based on Ethernet

Because of the complexity of tactical environment in which the torpedo homing system worked, the torpedo homing system hardware-in-the-loop( HWIL) simulation has become an important method in developing and evaluating torpedo acoustic homing system performance in laboratory. A HWIL simulation system for torpedo acoustic homing based on Ethernet was proposed, of which tar?get/ background signals were simulated by electrical signal injection method, framework and principle were described, the mainly target/background models for acoustic simulation, such as narrowband spot and scale models, reverberation and ocean noise models, were discussed in detail. Hardware of the acoustic simulation signal source was designed by the direct digital signal synthesizer. The time-delay filter algorithm was proposed to realize synchronous output of multiple channel signals with time infor?mations in real time. The simulated results show that the HWIL simulation system is effective for de-veloping and evaluating torpedo acoustic homing system.