计算得出导弹的被动段飞行轨迹（未考虑大气）和再入点、落点信息（在发射惯性坐标系内的位置量）-Calculated the passive missile flight path segment (not to consider the atmosphere) and re-entry point, placement of information (in the firing position within the inertial coordinate system volume)

仿真了弹道导弹在大气层上方的自由飞行段和重新进入大气层的再入段的飞行过程，可以作为初学者的参考。-Simulation of ballistic missiles above the atmosphere again free flight segment and re-entry into the atmosphere during the flight load segments can be used as reference.