舰载光电跟踪系统全自动低空控制算法

根据雷达定高算法提出了"近似-比较"数学模型,并设计出一种新的低空控制算法,该算法共分3步:对跟踪目标的角度进行反变换,在大地坐标系下进行合成角度的当前统计模型数据外推;"近似-比较"法进行数学建立模型,判断是否提取海面杂波;将外推数据进行正变换,对"扎海"的光电设备进行二次引导。通过试验,验证了该算法能够连续6s提供比雷达引导精度高一个数量级的二次引导及控制视轴稳定跟踪低空掠海目标的能力。

Full-automatic ultralow-altitude control arithmetic in shipborne optical-electronic tracking system

Based on the fixed height arithmetic of radar, a new ultralow-altitude control arithmetic called "Approximation-comparison" is designed in this paper. The arithmetic mainly consists of three parts: reverse transformation of the angle of the tracked target, extrapolation of the angle data according to current statistical model in earth coordinate system; using "Approximation-comparison" arithmetic to build a mathematic model and estimating whether or not the extracted target is false sea wave; positive transformation of the extrapolated data and offering second lead to the optical-electronic device. Simulation experiments prove that the arithmetic can offer second lead data to the servo system continuously for 6s with precision one order higher than that from radar and control LOS to track ultralow-altitude target.