摘要
为提高防空炮弹的精确打击能力,该文以一类鸭舵控制的防空制导炮弹为对象,根据防空弹药的作战特点,对弹道预测导引法和修正比例导引法的应用进行了研究。基于三自由度有风质点弹道模型,提出了具有良好精度和较快计算速度的弹道预测解析模型及相应的剩余飞行时间估算公式,并分析了不同条件对预测模型精度的影响;根据炮弹当前位置和目标未来点间的位置偏差矢量,推导了修正比例导引的加速度指令。理论分析及仿真结果表明,两种导引方法在一定条件下均具有较好的控制效果;对于不同弹道控制量及不同有效射程,弹道预测导引法适用于防空炮弹的弹道末段,而修正比例导引法则适用于弹道初始段及中段,可满足控制精度和飞行稳定性的要求。
To improve the fire accuracy of air-defense projectiles,taking a type of air-defense guided projectiles with canard control as an object,the application process of trajectory prediction guidance （ TPG） and modified proportional navigation guidance（ MPNG） is studied in terms of the properties of air-defense projectiles. Based on the 3D trajectory model containing wind, an analytical model for trajectory prediction and the corresponding algorithm for estimating time-to-go are proposed,both of which are of good accuracy. According to the bias vector between the projectile and the future position of maneuvering target,a simple expression of acceleration command for MPNG is derived.＆amp;nbsp;Theoretical analysis and simulation results indicate that both of TPG and MPNG are satisfactorily effective under some conditions. For different control quantities and flight ranges, the TPG can be applied to the terminal phase of trajectory while the MPNG is more appropriate for the initial phase and mid-course. Both of the accuracy and stability requirements can be attained.
出处
《南京理工大学学报》
EI
CAS
CSCD
北大核心
2014年第1期123-128,共6页
Journal of Nanjing University of Science and Technology
关键词
制导炮弹
防空
导引方法
弹道预测
剩余飞行时间
修正比例导引
guided projectiles
air defense
guidance law
trajectory prediction
time-to-go
modified proportional navigation guidance
