双色探测激光引信抗海浪技术

Laser fuze anti-surf based on two-wavelength detection

阐述了双色激光引信探测的原理,提出采用双色探测,利用海水对红外激光与蓝绿激光回波特性时域差异显著,而舰船对二者的反射特性相近的特点,区分目标与海面,提出抗海浪干扰和判别目标的双色激光引信方案。双色激光引信利用激光发射系统同时发出红外和蓝绿窄脉冲激光,激光接收系统采用两路探测器分别接收两种波长的回波信号,信息处理系统对两路激光回波信号进行高速实时采集,获得两路回波信号幅度、脉冲宽度、回波率等区分目标和海面。通过设计样机并进行海面试验,试验结果表明,双色激光引信抗海浪干扰效果良好。

Two-wavelength laser fuze detection principle was expounded and a new technical approach was invented for laser fuze anti-surf and target-recognition by the character of echo between infrared and blue-green laser was different observably when two-wavelength laser exposured sea and the character of echo between infrared and blue-green laser was similar when two-wavelength laser exposured the target. Laser transmitter system of two-wavelength laser fuze transmitted two kinds band laser of infrared and blue-green at same time, receiving system received echo signal of two kinds band by two detectors, information processing system acquisited echo signal with high-speeds and realtime to acquire the range, pulse width and laser echo ratio and so on, using this information to distinguish sea and target. The prototype of two-wavelength laser fuze was designed, and the different objectives test in the sea by the prototype was done. The result of test show that the effect of two-wavelength laser fuze anti-surf is favourable.