Dynamic Virtual Simulation Technology Based On Satellite Data Stream

With the rapid development of computer simulation technology and satellite system,the satellite simulation system has gradually become an indispensable link in the development of new satellite.The existing satellite simulation model is often bound to the specific model requirements and simulation platform interface,resulting in poor universality and reusability of the satellite simulation model,which requires repeated modeling development for different model simulation tasks.In order to improve the universality and reusability of satellite simulation model,this paper develops a simulation study of dynamic virtual technology based on satellite data stream,so as to improve the efficiency of model development and meet the needs of satellite system.The purpose of this paper is to improve the current situation of low generality,low reusability and low efficiency of the existing satellite simulation model.On the basis of relevant research and analysis,the simulation model of satellite data flow is designed and implemented by combining the design of general model for data flow,configuration of simulation model and fault injection based on remote procedure call.The main research contents of this paper are as follows:1)Based on the design method oriented to data stream,a general simulation model is established for the single-machine on the satellite,and the single-machine model on the satellite is abstracted into three modules: repository,package,and trigger logic.2)Using the idea of configuration modeling,on the basis of satellite data flow simulation model,further abstract simulation model,model design parameters and model algorithm are separated,through the configuration of parameters can quickly achieve the construction of the target system simulation platform.3)Based on RPC technology,the trigger and implementation of fault injection are separated,and the implementation of injection is embedded in the general simulation model,so as to improve the status of the binding of fault simulation model with model simulation model.The scalability of fault injection model is improved by decomposing fault model into data interaction model.By adopting the configuration design method of the satellite general simulation model and combining with the RPC-based fault injection mechanism,the simulation test platform of a certain type of satellite was quickly built,which effectively shortened the development cycle of the satellite simulation model and improved the development efficiency.Experiments such as in-orbit operation and fault injection were carried out on the simulation platform to verify the correctness and effectiveness of the simulation model.