弹道系数C_b是影响弹道外推的重要参数。当前,在弹道外推计算时C_b的值主要依靠经验进行人工估计,其精度较差,从而影响外推精度。为提高弹道外推的精度,文中提出了一种利用拟合弹道系数C进行外推的方法,该方法根据弹道测量数据求C,而且能将各种射击条件的探测误差折合进弹道系数,保证了射击条件探测误差较大情况下的外推精度,具有很强的实用性。仿真结果表明,外推误差在0~0.3%D范围的概率达99.5%以上。

Ballistic coefficient is an important parameter for trajectory extrapolation. Now, the value of ballistic coefficient is estimated by experience with bad accuracy, this will influence the extrapolation accuracy largely. In this paper, an extrapolation method based on fitted ballistic coefficient was proposed. This method estimates the fitting ballistic coefficient using the measured trajectory data and the measurement errors of shooting condition are considered in the fitted ballistic coefficient, so the extrapolation accuracy is high even despite of measurement errors. The simulation results show that the probability for extrapolation error with 0 to 0.3% reaches to 99.5%.