摘要
针对地球扁率对远程导弹射程的影响,本文以惯性空间为基准,建立弹道导弹主动段在发射惯性坐标系中的运动方程,并假设地球为均质球体,在极坐标系中建立导弹被动飞行段弹道方程,通过简化公式,对地球自转和地球扁率对导弹射程偏差的影响进行了计算,并通过多条弹道进行仿真分析,仿真结果表明,地球扁率对导弹射程偏差的影响比单独考虑地球自转时显著增加,因此,计算大射程导弹射程及预测落点偏差时,必须考虑地球自转及扁率的影响,否则误差较大。该研究对提高导弹的命中精度意义重大。
In view of the influence on earth oblateness on long-range missiles, based on the inertial space reference,driving ballistic missile fight trajectory equation in launch inertial coordinate system is established. By assuming the earth as a homogeneous sphere,passive ballistic missile flight trajectory equation in polar coordinates is established,and the accuracy of ballistic missile trajectory influenced by earth rota- tion and earth oblateness is calculated and analyzed with simplification formulation. The simulation results show that the effect of earth＇s oblateness on the missile range deviation significantly increased than the rotation of the earth into account alone,and earth rotation and earth oblatenss should be considered by calculating ballistic missile accuracy, otherwise the error will be increased. The study is significant to improve the missile hit precision is significant.
出处
《青岛大学学报（工程技术版）》
CAS
2013年第3期93-96,共4页
Journal of Qingdao University(Engineering & Technology Edition)
关键词
弹道导弹
地球自转
地球扁率
射程偏差
ballistic missile
earth rotation
earth oblatenss
ballistic missile
missile accuracy
