| 1. | According to the character of ballistic missile in boost phase , the gravity turn model is established , and according to the position relationship between early warning satellite and the target , the measure model is established 根据弹道导弹主动段运动的特点,建立了主动段运动重力转弯模型。根据预警卫星与目标的位置关系,建立了观测模型。 |