对目标弹道受力进行分析，考虑J2摄动的影响，并包含短周期项，弹道预报方法使用数值积分法(The force of the target trajectory is analyzed, considering the influence of the J2 perturbation, and contains the short term term, the trajectory prediction method using numerical integration method .)

用于导弹弹道分析估计推断，适用于信息更新过程，或者不确定时(qwf kaf jda fafl ak hlaf)