弹道导弹主动段扰动引力的一种逼近算法

弹道导弹扰动引力的计算量非常大,目前的弹载计算机因计算速度限制,是不可能实现计算的,必须采用快速的扰动引力逼近算法。针对地面司托克斯积分方法等方法计算扰动引力的不足,提出了利用重力线求解重力的一种方法,并用该方法计算标准弹道附近的扰动引力,作为实际弹道扰动引力的逼近准备数据。给出了弹道主动段扰动引力的BP-神经网络逼近算法,并通过算例证明扰动引力的神经网络逼近是可行的。

Approximation of the Disturbing Gravity of the Active Phase of Ballistic Missile

The caculation time of the disturbing gravity of ballistic missile is very long.It is impossible to calculate the disturbing gravity using computer in ballistic missile for the limitation of the calculation velocity at present and it is necessary to adopt fast approximation method of the disturbing gravity.For the deficiency of calculating the disturbing gravity using Stokes integral method and so on,A method of calculating the gravity using gravity line is given.The disturbing gravity calculated by it round standard trajectory is regard as the approximation prepared data of the disturbing gravity of real trajectory.At the same time,the approximation of the disturbing gravity using BP-neural network in the active phase of ballistic missile is put forward and it is proved to be feasible and valid by the proof of calculation illustration.