一种面向区域目标的敏捷成像卫星单轨调度方法

An Improved Single-orbit Scheduling Method for Agile ImagingSatellite Towards Area Target

  • 摘要: 目的 针对传统卫星调度方法难以满足应急观测强时效性的问题,提出一种针对敏捷成像卫星的调度方法。首先动态计算敏捷卫星观测摆角、幅宽和持续时间,再以平行条带分割区域目标,获得最小姿态调整时间;在此基础上,设计等步长搜索算法求解对区域目标的最佳观测点。构建了包含4颗敏捷成像卫星的STK 仿真场景,仿真结果说明该方法在提高观测目标覆盖率的同时减少了获取影像的时间。

     

    Abstract: Objective Traditional satellite scheduling method has difficulties to meet the need for timely responsein emergency observation missions.In this paper,an improved single-orbit scheduling method is pro-posed for agile imaging satellites as a tentative solution.This method first dynamically calculates theobservation angle,swath,and duration of the agile imaging satellite.Cutting of area targets are thenperformed using parallel strip,followed by the acquisition of minimum attitude transition time.A spe-cialized step-size search algorithm is employed to find the best observation point towards the area tar-get.In our experiments,the STK simulation scenario is constructed with four agile imaging satellites.The simulation results show that the new method improves the coverage of area target while reducesthe image acquisition time.

     

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