摘要
为了评估目标射程状态下再入偏差精度指标分配,提出一种基于小样本试验数据再入偏差折合及评估方法。首先分析再入段干扰因素对飞行器再入运动特性及落点偏差影响机理,建立考虑各种再入偏差因素影响动力学和运动学计算数学模型,计算干扰条件下目标射程和试验射程再入偏差,求出试验射程至目标射程再入误差折合系数,分离试验条件下再入偏差,并折合至目标射程状态。将该方法应用于飞行器试验数据分析,得到了小子样试验数据条件再入偏差评估结果。方法及研究结果对再入误差分析计算和落点偏差精度指标评定具有重要应用价值。
To evaluate the distribution index of reentry deviation in the target range,a evaluation method of reentry deviation is proposed based on small sample test data.Firstly,the RV’s interference factors and the influence mechanism are analyzed,and a reentry error computation model is established,based on which the results of reentry error considering interference factors are calculated separately for target range condition and test range condition.Then RV’s reentry error for test range condition is obtained by analyzing flight test data,and it is converted to the target range condition.By applying the flight test small sample reentry error evaluation method,it can be concluded that the maximum reentry deviation of target range are within the range of indicators assigned.The method and results have important application value to the analysis and calculation of the reentry error and the evaluation of the impact accuracy.
作者
严东升
贾平会
郭珂
秦绪国
唐林卡
Yan Dong-sheng;Jia Ping-hui;Guo Ke;Qin Xu-guo;Tang Lin-ka(Beijing Institute of Space Long March Vehicle,Beijing,100076)
出处
《导弹与航天运载技术》
CSCD
北大核心
2021年第1期45-49,71,共6页
Missiles and Space Vehicles
关键词
再入偏差
误差折合
精度评估
reentry error
error reduction
accuracy evaluation
作者简介
严东升(1963-),男,研究员,主要研究方向飞行器飞行动力学;贾平会(1988-),男,高级工程师,主要研究方向为飞行器飞行动力学;郭珂(1983-),男,博士,高级工程师,主要研究方向为飞行器飞行动力学;秦绪国(1982-),男,博士,高级工程师,主要研究方向为飞行器总体设计;唐林卡(1963-),男,研究员,主要研究方向为飞行器总体设计。
