Taking account of the perturbation of the earth ’ s shape , the gravitation of the sun and the moon , the radiation pressure from the sun light and atmosphere drag , a precise orbital dynamic model of spacecraft is established in the equatorial geocentric inertial coordinate system ( j2000 ) 考虑了地球形状摄动、日-月引力摄动、太阳辐射压力和大气阻力因素对飞行器的影响,在地心赤道惯性坐标系下建立了精确的轨道动力学模型。
The ballistic determination , using the orientation information of the sun , the earth , and the moon , is based on an obvious fact , that is , once the “ moon - missile - earth ” angle and the “ sun - missile - earth ” angle observations are only acquired , also with the known inertial positions of the sun and the moon relative to the earth , the inertial position of the missile will be determined uniquely 弹道导弹利用日、地、月方位信息确定位置信息是基于一个明显的事实:当“月-弹-地”夹角和“日-弹-地”夹角确定时,再加上日、月在地球惯性坐标系下的已知方位,那么导弹的几何位置就唯一确定了。
