舰载光电跟踪系统红外自动捕获技术

Infrared automatic capture technology on shipborne photoelectric tracking system

针对舰载光电跟踪系统动基座跟踪和复杂海面背景的实际特点,提出了一种基于数学稳像平台的视轴稳定技术。利用捷联式惯性导航系统和控制单杆的在线干预,在红外捕获跟踪器无脱靶量输出时,即可实现视轴动态瞄准的角度无静差控制。通过基于先验知识的目标捕获区域规划的方法避免了工作时复杂海面背景干扰带来的误捕获,提高了动基座条件下的目标自动捕获能力和可靠性。该系统放置在自重仅700t的测量船上,在四级海况条件下对各类初始发射目标的自动捕获概率达到95%以上。

Aiming at the characteristics of shipborne photoelectric tracking system that works under mobile pedestal and complicated sea background,a method of using a mathematics platform for line of sight（LOS） stabilization was proposed.Using strapdown inertial navigation system（SINS） and offset staff adjustment on line,the zero steady-state angle error of LOS dynamic collimation was realized when there was no infrared tracking feedback.Moreover,the interference of complicated sea background has been restrained by designating an infrared image area based on prior knowledge and the capability and stability of automatic capture based mobile pedestal have been enhanced.Now,this system is placed at a small warship of which dead weight is only 700 tons,then the probability of independent capture is more than 95% under four-grate sea condition.