The Research On Ground Information Processing System In Semi-physical Simulation Of Space-based Early Warning System

Space-based early warning system has an important strategic position in the field of national defense and security,also play an increasingly important role in the war under high-tech.High-orbit satellites and low-orbit satellites work together to complete the detection of the full flight of ballistic missiles.A large number of studies on space-based early warning systems remained in the simulation modeling stage.To verify the tracking ability of space-based warning systems for ballistic missiles,we designed a semi-physical simulation verification system.The main work of this thesis is to design and realize the ground system in the semi-physical simulation system.Firstly,combined with the characteristics of the ballistic missiles flight process,this thesis systematically reviews the implementation process of the high-orbit satellites and the low-orbit satellites early-warning detection task.Then introduces the semi-physical simulation verification system of the space-based early warning system.Secondly,according to the requirements of the ground system,we divide it into four parts,namely,environmental simulation unit,task management unit,host control unit and performance evaluation unit.All unit work together to complete the work of ground system requirements.For the problem of limited hardware resources board on satellite and single-satellite system,we take a set of them as an active resource scheduling to achieve limited resources simulating the entire low-orbit early warning system.Combining with the coverage and visibility analysis module of STK simulation software,the feasibility of layout of high-orbit constellation and low-orbit constellation in semi-physical simulation is analyzed.Based on QT + STK,the ground information processing software is realized.After test the function of ground information processing software in the semi-physical simulation verification system proving it can work well.Finally,the space-based early warning system equips with passive sensors.Only the angle information about the target can be obtained from each satellite,and the distance information is lacking.Therefore,it is important to analyze the target line of sight error.Based on the predecessors,this thesis studies the target line of sight error of the large elliptical orbit satellite in the space-based early warning system,and obtains some useful conclusions.The research of this thesis provides a semi-physical simulation foundation for the design of the ground station of the follow-up space-based early warning system,which has certain reference value for the construction of the space-based early warning system.