临近空间无动力攻击器修正弹道建模与仿真

Correction Trajectory Modeling and Simulation for Near-Space Unpowered Attacker

针对临近空间无动力攻击器飞行高度跨度大、速度高、射程远等特点,建立了空气动力模型,考虑高空气动力、重力加速度随高度与纬度的变化,地球自转以及地表曲率等因素对弹道的影响,建立了精度较高的弹道数学模型,并与不考虑以上因素的情况进行了对比。仿真结果表明:临近空间无动力攻击器弹道建模中考虑上述因素的影响是必要的。

According to the characteristics of the high altitude span, high speed, and long-range of the near-space unpowered attacker, the aerodynamic force model suitable for the attacker was established in this paper. The high accuracy ballistic model for the pursuer was built after considering some influence factors on the ballistic trajectory, which included the aerodynamic force in high altitude, the acceleration of gravity varying with the height and latitude, the rotation and the curvature of the earth. By comparing the high accuracy ballistic model with the common model without considering the above influence factors, it＇s proved that the new presented model for the near-space unpowered attacker was more reasonable and necessary.