Research On The Muti-objective Scheduling Method Of The Optical Imaging Agile Satellite

Based on the new generation of AEOS and its high ability of the attitudemaneuvering, the AEOS could achieve three-axis-maneuvering(roll, pitch and yaw).This dissertation puts forward the problem of scheduling the AEOS with the ability ofscan imaging. The scheduling is an important part of the satellite imaging process. Onlywith the better scheduling result, it can guide the relevant department to complete theuser and actual needs. With the analysis of the whole task flow, the assumed constraintshas been given. With the reasonable simplification of the whole problem, it establishesthe complete process of the AEOS.From the analysis of the model constraint and the scheduling process, using theconcept of viewing field of the camera, it establishes the time window model of theproblem of scheduling AEOS and calculation method. With using the Gauss Projection,based on it, the dissertation establishes the preliminary method of the linescan strip.Combining with the obit feature, it establishes the optimized objective function. Tocomplete the calculation of the attitude maneuvering and attitude determination quickly,it establishes the geometry method of three-axis attitude determination of the AEOS.According to the line-scan feature, it stipulate value of the yaw attitude and thecondition of the Gauss Projection point’s truncation. In the dissertation, it designs andimproves the model of attitude maneuvering time. Based on the average attitudemaneuvering ability, it considers a new mode of attitude maneuvering for the schedulingAEOS, to simulate the real situation better. Then, it defines the ‘available starting timewindow of the stripe’ and the ‘strict starting time window of the stripe’ and establishesthe constraints of the problem of scheduling AEOS. Based on simplify the complexconstraints, it establishes the constraint satisfaction model of the problem of schedulingAEOS with the linescan imaging.According to the constraint satisfaction model, it designs the solution strategy ofthe hierarchical optimization. During the sub-problem, generating the linescan stripewith groups, it designs the sub-problem model and solution method. Then with theexisting optimization algorithm in the matlab, it establishes the mathematical model ofthe linescan stripe’s centerline, to generate the linescan stripe’s centerline and theprojection of the point in the Gauss Projection stripes. Putting the optimization results tothe upper scheduling problem, with designing the algorithm of the scheduling AEOSbased on the heuristic rules, it establishes the related rules to complete the schedulingthe point and linescan stripe. Finally, considering to maximizing the overall revenue, itdesigns the conflict-relieve strategy, and gives the conflict-relieve process andscheduling method. This dissertation completes the all process of the modeling, algorithm design andsimulating of the scheduling AEOS. In addition, it gets a rational and ideal schedulingresult.