基于相位判别的反舰声引信抗海浪干扰机理研究

Mechanism Investigation to Anti-interference of Ocean Wave of Anti-ship Active Ultrasonic Fuze Based on Phase Discrimination

鱼雷非触发引信抗海浪干扰性能是鱼雷可靠性设计的重要指标。根据不同分界面对声波反射率的不同,该文对声引信的回波相位进行了分析,选取典型目标,并充分考虑了目标和鱼雷运动等影响因素,提出了通过相位判别来识别目标的方法,给出了用于反舰的声引信电路原理图,经理论推导分析了舰船和海浪回波相位的区别,并通过仿真试验验证了该方法的可行性,从而解决了引信抗海浪干扰的问题。最后对引信电路进行了设计,阐述了其电路组成、工作原理及工作特点。

The anti-interference performance of torpedo noncontact fuze against ocean wave is an important index for torpedo reliability design. This paper analyzes the echo-phase of active ultrasonic fuze on the basis of the differences among acoustic wave reflectivities on different interfaces, and presents a method of target recognition by phase discrimination according to the choice of typical target and the consideration of target and torpedo movement. The diagram of acoustic fuze circuit for anti-ship is given, and the difference of echo-phase between ship and ocean wave is analyzed theoretically. Simulation result verifies the feasibility of the proposed method. Finally, the constitution, principle and characteristics of the active ultrasonic fuze circuit are discussed.