干扰和噪声对激光制导性能及精度的影响

发布时间：2019-04-04 15:15

【摘要】：针对某激光导引头检测中输出弹目视线角速度误差较大的情况,分析指出弹目视线角速度噪声是角跟踪回路中探测器噪声、弹体扰动和摩擦等干扰力矩共同作用产生的。根据导引头控制原理建立了其稳定跟踪回路模型,定量分析了这些误差因素对导引头稳定跟踪性能和弹目视线角速度输出指令的影响程度。然后实测分析了激光导引头输出弹目视线角速度噪声特性,建立了其与弹目距离的函数关系,并将其加入某制导武器制导模型中进行仿真。结果表明:加入弹目视线角速度噪声后,弹体滚转姿态角变化较大,舵偏角变化也较大,近距离时由于角速度指令噪声较小对全弹道及脱靶量的影响比较小,这与实际检测结果相符较好。但近距时当角速度指令处于噪声峰值处,弹偏离后来不及修正可能会对导弹的近距攻击区有影响,研究方法及结论对导引头的实际研究测试及弹的战术使用均有一定的参考价值。
[Abstract]:In view of the large error of the line-of-sight angular velocity of a laser seeker, it is pointed out that the noise of the line-of-sight angular velocity is generated by the mutual action of the noise, the disturbance and the friction of the detector in the angular tracking loop. The stable tracking loop model of the seeker is established according to the control principle of the seeker, and the influence of these error factors on the stability and tracking performance of the seeker and the output command of the line-of-sight angular velocity of the seeker is quantitatively analyzed. Then, the noise characteristic of the line-of-sight angular velocity of the output of the laser seeker is measured, and the function relation with the target distance is established and the simulation is carried out in a guided weapon guidance model. The results show that the change of the angle of the body roll attitude is great, and the change of the rudder angle is also large, and the influence of the angular velocity command noise on the total trajectory and the target amount is small at the close range, which is in good agreement with the actual detection result. However, when the angular velocity command is at the noise peak in the near-close time, it is too late to correct the influence on the near-range attack area of the missile, and the research methods and conclusions have a certain reference value to the actual research and test of the seeker and the tactical use of the missile.
【作者单位】：中国洛阳电子装备试验中心;
【基金】：国家自然科学基金(11504420) 总装重点课题(2014SY3310403)
【分类号】：TJ765.3

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