快速侦察任务响应时间分析与轨道设计

提出以任务响应时间为指标设计侦察任务和卫星轨道。给出了侦察卫星采用近地快速覆盖轨道执行快速侦察任务的流程，讨论了数据回收站的布设原则和发射场的选取方法，分析了数据回传对发射轨道的约束和光照条件对发射窗口的约束。在此基础上分析了侦察任务的响应时间，设计了快速侦察任务的最优轨道，使任务响应时间最短。在光照约束条件下，快速侦察任务的最大响应时间为1天。仿真算例验证了近地快速覆盖轨道的快速响应能力。

Analysis of response time and orbit design for responsive reconnaissance

The response time is proposed to act as a metric to design a reconnaissance mission and its satellite orbit.The process of a responsive reconnaissance mission based on a low-earth fast access orbit(FAO) is analyzed,the deployment of a data collection station and the selection of a launch site are discussed,the data-receiving constraint on the launch orbit is analyzed,and the launch window is obtained considering the solar elevation angle.Based on the above analysis,an optimal orbit for the responsive reconnaissance is designed,which results in the minimum response time of the mission.Under the solar illumination constraint,the maximum response time of the responsive reconnaissance is one day.A simulation example exhibits the responsiveness of FAOs.