Multi satellite imaging planning method with optimal response time for emergency tasks
2020, 40 (2):
The problem of response time in multisatellite imaging planning for emergency tasks was investigated. To avoid the influence of preferentially planning of emergency tasks on total task revenue, a multisatellite imaging planning method was proposed, with which the response time of emergency tasks was optimized and the total task revenue was considered. Firstly, according to the characteristics of multisatellite imaging planning which considers both emergency and routine tasks, a constraint satisfaction model for twolevel target optimization was established. Secondly, the model solving process was divided into two parts,i.e., selection of time window and dynamic planning on single orbit. The selection of time window was optimized based on adaptive immune algorithm, and the forward dynamic planning algorithm was designed to determine the optimal path of satellite on single orbit. Finally, the designed algorithm was tested and compared with other algorithms. Simulation results demonstrate that the proposed method can ensure the shortest response time of emergency tasks and get relatively high total task revenue in largescale problem of multisatellite imaging planning.
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