基于二轴转台的运动目标球幕投影联合控制

The Research of Joint Control Algorithm of Moving Target Dome Projection Based on Two-axis Turntable

针对目前大型球幕目标模拟系统结构复杂、投影亮度低的缺点,设计了一种基于二轴转台的目标模拟装置。讨论了系统投影坐标体系及投影图像与二轴转台角位置之间的对应关系。分析了目标精确定位的原理,提出了图像生成软件与二轴转台的联合控制算法,使用基于不同目标速度的转台控制方式并利用软件实时计算补偿转台滞后,实现目标的精确定位。实验结果表明,在对1 km以外的目标进行模拟时,本系统目标的平均定位精度在0.11像素以内,目标模拟系统满足武器系统半实物仿真的需要。

To solve the problems of complex structure and low projection brightness of current large dome simulation system, a new kind of target simulation system based on two-axis turntable is designed. The projected coordinate and the correspondence between projected image and the two-axis angles of turntable are discussed. The principle of target precise positioning is introduced. The joint control algorithm between image generation software and control of two-axis turntable is proposed. The algorithm is that turntable is controlled based on different target speed and it uses software to compensate lag of turntable. The experiment results show that average position precision of the system can reach less than 0.11 pixel when the simulate target is more than 1 km away. The target simulation system meets requirements of semi-physical simulation.