旋转弹导引头红外角跟踪回路研究

分析了导引头红外末制导角跟踪回路的稳态性能对旋转弹跟踪性能的影响,以及起伏噪声对制导精度的影响,提出了采用二阶无静差角跟踪回路的改进办法.针对改进后的角跟踪回路,计算出了失调角和目标视线角之间的关系,并采用卡尔曼滤波将目标视线角速度准确地估计出来.试验结果表明:二阶无静差系统可以提高旋转弹的跟踪性能,且能够输出满意的制导信号,具有很好的实用价值.

Study on the Infrared Angle Track Loop of the Seeker in Rolling Airframe Missile

The relationship between track ability of rolling airframe missile(RAM) and steady state error of the infrared angle track loop is discussed in this paper.Furthermore,the bad effects on guidance accuracy caused by track loop jitters are analyzed.The improved track loop is a type II control loop for zero steady state pointing error under a constant target line-of-sight(LOS) rate.For guidance,the target line-of-sight angle and rate are estimated accurately using a Kalman filter.The result of experiment shows ...