Research On Modeling And Simulation Technology Of On-orbit Service Objects

With the ever-increasing aerospace mission,the space environment has become increasingly important for space missions,and the militarization of space has become increasingly high.The high cost of spacecraft and its low repairability make it very important to study the on-orbit service objects in the current state.The modeling and simulation of on-orbit service objects can not only quickly understand the spatial situation,but also a pre-research verification of the new space mission.This paper aims at the unique characteristics of the above aerospace fields,modeling and simulating the on-orbit service objects,analyzing and demonstrating the analysis of the two-body orbit,and combining the three-dimensional visual simulation technology to design the system.The main contents of this dissertation are as follows:1.Simulation platform construction.The Xenserver server virtualization platform is introduced,and the design of the database of catalog information stored in the MySQL database management system and the orbital extrapolation simulation result database in HBASE is briefly introduced.The structure of the data table is briefly explained.Prepare the modeling and simulation of the rail service object.2.On-orbit service object modeling and simulation.The basic principles of the satellite orbital dynamics are analyzed and studied.The two-body problem and the analysis of the two-body dynamics equation are mainly introduced.The algorithm for orbit extrapolation calculation using the orbital number is proposed,and the extrapolation calculation is performed using SCILAB.For example,the satellite’s position vector,velocity vector and attitude vector,the extrapolated data is stored in HBASE,and compared with the STK test to verify the correctness of the simulation results.3.Visual simulation system design.According to the above research,a visualized simulation system is designed.Through this system,the data in the database can be queried for two-dimensional display and information can be screened in multiple conditions.It can also perform three-dimensional simulation of orbital orbital flight,and it has basic functions such as setting save and playback.The objects studied in this paper are all on-orbit service objects,realizing the real-time simulation and observation of satellites in space,and their schemes and research ideas have certain derivation for our country’s control of space security.This research passed the review of an aerospace research institute and can perform real-time simulation of in-orbit service objects in space,which has a strong scientific significance.