激光对红外成像反舰导弹的对抗能力分析

首先从导引头激光接收功率密度是否大于其饱和阈值的角度推导出激光最大干扰距离的表达式，并将其与激光直视距离比较取小提出激光对抗距离的上限；然后从受干扰后的导弹是否还对目标构成威胁的角度推导出激光对抗距离的下限；接下来对影响激光对抗距离范围的各个因素分别进行分析；最后结合告警装置作用距离对激光对抗武器系统的响应时间进行了规定。分析结果表明：增强舰船机动性、增大激光器输出功率、增大发射望远镜孔径、改善激光光束品质、缩短系统响应时间能够有效提高激光武器系统对抗红外成像制导导弹的能力。

Confrontation Ability Analysis of Laser to Infrared Imaging Anti-ship Guided Weapons

At first, the expression of maximum laser jamming range was reduced from the point of view of whether the power density of laser received by seeker was greater than the saturation threshold of the photosensitive pixel, and the upper limit of countermeasure range was proposed by choosing the minor value between maximum jamming range and line of sight distance of laser. Then, the lower limit of coun- termeasure range was pro!~se6 from ~he angle o{ -~hether the disturbed missi~e still threatens the ship. Thirdly, factors which affected coun- termeasure range were analyzed respectively. At last, the system response time was regulated by considering the detection range of warning device. The analysis results showed that improving the ship＇s maneuverability, increasing the output power of laser, widening the aperture of telescope, improving the laser beam quality and shortening the response time would enhance the confrontation ability of laser weapon sys- tem against infrared imaging guided missile.