局部空域覆盖的回归轨道预警星座设计方法

Method on Designing a Part Airspace Covered Early Warning Constellation in Recursive Orbit

针对低轨预警卫星星座设计问题,提出一种局部空域覆盖的回归轨道预警星座设计方法。根据可能来袭弹道确定需覆盖的空域,利用目标与卫星的可见性条件,求出能有效覆盖的卫星位置集合,以时间覆盖缝隙最小化为目标建立星座的优化模型,并给出基于最优轨道的求解算法。实例分析发现,对实例中空域的无时缝覆盖只需要8颗卫星。

Aiming at the early warning constellation design, a part airspace covered early warning constellation in reeursive orbit is put forward. According to the attacking trajectories, the area which satellite should cover is determined. By using the visibility conditions of target and satellite, a set of airspace which satellite deploy can cover effectively is obtained. An optimized model is built by targeting minimum coverage time period. In addition, an algorithm which is based on optimized orbit is proposed. A case study shows that only 8 satellites are needed to cover appointed airspace.