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给出了空间应急任务的解决方法,当发生需要空间服务的应急任务时,首先利用现有卫星组成的星座对目标地点进行覆盖计算,如果其覆盖性能不满足任务需求,就用NSGA-Ⅱ算法对卫星星座进行优化设计,这里优化星座中每颗卫星的平近点角;然后利用调相机动实现星座优化结果,将卫星机动到指定位置,并计算每颗卫星的机动时刻以及机动所需要的能量;最后给出了应急任务算例和它的具体解决过程,计算出了卫星机动变轨的时刻和所需能量。
The solution to the problem of space emergency task is given. When the emergency task that needs space service occurs, the constellation composed of the existing satellites is firstly used to cover the target location. If the coverage performance does not meet the task requirements, NSGA-Ⅱ algorithm Optimize the constellation of the constellation, and optimize the constellation point of each satellite in the constellation. Then use the phase modulation engine to realize the constellation optimization result, maneuver the satellite to the specified position, and calculate the maneuvering time of each satellite and the required maneuver Finally, an example of emergency task and its concrete solution process are given, and the moment and required energy of satellite maneuver orbit change are calculated.