针对隐身飞机的隐身特性, 提出一种采用分布式激光主动扫描照射和回波接收方式进行警戒探测的激光栅栏技术, 作为目标探测的新型探测手段。给出了激光栅栏技术的原理和发射接收分机的组成, 针对国外典型隐身飞机的部分飞行参数, 进行了激光栅栏参数的初步设计, 拟采用17.3 km为间隔设置激光发射接收装置, 激光光束扫描角度为60°; 采用重复频率20 kHz, 脉冲宽度10 ns, 单脉冲能量3.2 mJ, 平均功率64 W的YAG激光器作为发射机; 采用雪崩光电探测器进行接收。通过计算, 可以实现对15 km飞行高度, 1.5 Ma飞行速度的隐身飞机的探测需求。

According to the stealth characteristics of stealth aircraft, a laser fence technology, as a new target detection method, using distributed laser active scanning and laser echo receiving to perform warning detection is proposed. The principles of laser fence technology and the composition of transmitting and receiving sub-system are introduced. According to flight parameters of typical stealth aircraft in foreign countries, 17.3 km interval is used to design laser transmitting and receiving devices to design the parameters of the transmitting sub-system in the laser, such as laser optical beam scanning angle, repetition rate, pulse width, 3.2 mJ single pulse energy and average power. The calculation results show that the method can meet the detection demand of a stealth aircraft with 15 km flight altitude and 1.5 Ma flight speed.