Research On Sensor Scheduling Method In LEO Warning System

In LEO warning system,Sensor scheduling is very important,it's the basis of the target location,continuous trace and target identification.it's very different from the model before because of the limited resources,the quick movement of platforms and targets,and the uncertainty of launching events.Based on added the energy restrictions and the analysis of the restrictions of sensor scheduling,a recapture model combined space,time and energy for sensor scheduling is proposed.Furthermore,through added the trigger event of the tracking accuracy rate,we establish the scheduling model based on the whole progress and the tracking accuracy of the last intercept point is taken as the final optimization goal.The main three efforts include:(1)Add the energy constraint condition.Describe and analyze the problem of sensor scheduling and the whole constraints in the middle and low-orbit early-warning system,and improve the constellation coverage,thus laying the foundation for the follow-up sensor scheduling algorithm.(2)The recapture probability scheduling model.On the basis of analyzing the constraints of sensor scheduling,the new energy constraint condition is added and combined the single frame detection probability,a recapture probability scheduling model combined space,time and energy for sensor scheduling is put forward according to the actual condition of early warning.(3)A sensor scheduling method based on the whole progress.Through analysis of the characteristics of stable tracing progress before,in order to better suit the early warning actual situation,we establish the scheduling model combined the recapture progress and the stable progress.The tracking accuracy of the last intercept point is taken as the final optimization goal which makes the model fit the real warning situations better.