Research Of Task Planning And Scheduling Of Satellites And Decision-Making Technologies

The destination of task planning and scheme scheduling of imaging satellites is considering each constraint integrally, assigning tasks for each satellite and each land station in reason, arranging the running of satellite and creating satellite imaging schemes in condition of multi satellites and multi land stations, which helps to gain image information of imaging demand ordered by users.The paper, aiming at the task planning and scheme scheduling of imaging satellites, studies three aspects of it. That is: task planning of multi satellites and multi land stations, satellite imaging scheme scheduling and visual decision-making.The task planning of imaging satellite is to assign imaging demand to satellites and assign satellite accessing to land stations. The paper, considering the characteristics of multi satellites and multi land stations, studies the solution of the problem, designs and implements an experimental expert system combined with a model base for task planning.The scheme scheduling of satellites is to generate the running plans and the imaging schemes for satellites with multi objective considered. The paper constructs an imaging demand constraints model, on the base of which Multi-Objective Evolutionary Algorithm is applied to implement the scheme scheduling of imaging satellites.The paper also studies the technology of visual decision-making for task planning and scheme scheduling of imaging satellites, including visual decision-making based on GIS and 3-dimension satellite running simulation based on STK. A kind of imaging scheme illustration is implemented, on the base of which the visual update of imaging scheme is available.