基于三次B样条曲线的一维弹道修正弹空气阻力系数拟合

Simulation for Air Resistance Coefficient of One-dimension Trajectory Projectile Based on Cubic B-spline Curve

为提高弹道修正弹的射击精度,对一维弹道修正弹空气阻力系数的拟合方法进行了研究。在分析Logistic曲线对43年阻力定律拟合缺点的基础上,提出了一种采用三次B样条曲线对其进行拟合的新方法。并通过某型号一维弹道修正弹验证了该拟合方法具有可行性好、拟合精度高、运算简单、结果可靠等优点。该拟合方法的提出为一维弹道修正弹空气阻力系数的拟合提供了一种新的研究方法,更便于外弹道的仿真计算。

To improve shooting accuracy of trajectory correction,this paper has studied fitting method of one-dimension trajectory correction projectile. On the basis of analyzing disadvantages of fitting effect of the 43 Resistance Law,which is simulated by Logistic curve,this paper has proposed a new method for simulation by using Cubic B-spline curve. And this method has been verified with many features,such as good feasibility,high fitting accuracy,simple computing operation and reliable result by using a certain one-dimension trajectory projectile. The proposed fitting method of this paper has provided a new research method for air resistance coefficient of one -dimension trajectory projectile,and it’s more convenient for simulation of extrerior ballistic.