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激光引信是制导武器普遍使用的近炸引信,然而要在实验室内获得接收机窗口处的光信号功率并验证信号处理系统的准确性是比较困难的。针对这一问题,提出一种基于光纤传输的激光引信仿真系统。此系统首先通过耦合透镜和自聚焦透镜将发射机输出的激光束耦合进入光纤通道,然后通过程序控制的宽带光强衰减器实时地模拟光束经过目标反射引起的光强衰减,最后将衰减后的光信号通过光纤传输并经过耦合透镜馈入引信的接收机窗口。该系统的设计能够较为准确地模拟激光引信在交会过程中的回波光功率大小,并可实时地仿真激光引信各通道的回波信号,从而可以在实验室内验证激光引信信号处理系统的可靠性。
Laser fuze is a near-miss fuze commonly used in guided weapons. However, it is difficult to obtain the optical signal power in the receiver window and verify the accuracy of the signal processing system in the laboratory. To solve this problem, this paper proposes a laser fuze simulation system based on optical fiber transmission. The system firstly couples the laser beam from the transmitter into the fiber channel through the coupling lens and the autofocus lens, and then attenuates the light intensity caused by the reflected light through the target in real time through the program-controlled broadband attenuator. Finally, the attenuated The optical signal is transmitted through the optical fiber and fed through the coupling lens to the receiver window of the fuze. The design of this system can simulate the echo optical power of the laser fuze more accurately during the rendezvous and simulate the echo signals of each channel of the laser fuze in real time so that the reliability of the laser fuze signal processing system can be verified in the laboratory .