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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。
In view of the actual characteristics of moving base tracking and complex sea background of carrier optical tracking system, a visual axis stabilization technique based on mathematical image stabilization platform is proposed. With the strapdown inertial navigation system and the single intervention of on-line control, no static deviation control can be realized when the infrared capture tracker has no off-target output. The target capture area planning method based on prior knowledge avoids the erroneous capture caused by the complicated background interference at sea and improves the target automatic capture capability and reliability under moving base conditions. The system is placed on a measuring vessel with a dead weight of only 700t, and the probability of automatic catching of all kinds of initial launching targets reaches above 95% under the condition of four-stage sea state.