Research Of AOS Receiver Distributed Simulation Systems Based On HLA-RTI

In order to achieve the development of space technology level,meet the need of aviation and space flight of many complex tasks,the advisory committee on international space data system(CCSDS)published in 1986,and expanded the advanced orbiting system(AOS)protocol.At present,the AOS system is particularly important in the field of aerospace technology,the corresponding simulation technology has become more and more advanced,and HLA-RTI can by the object-oriented method to establish simulation model of system,and it can realize the federal members in the simulation system of interaction,and the simulation of AOS receiving system very well.This article is based on AOS of HLA and RTI distributed simulation system,the receiver is focused on the simulation was carried out on the frame synchronization member and data extraction member design and implementation.First,the receiver of AOS distributed simulation system is given the principle block diagram and the design of overall framework;Second configuration system development tools,to realize the simulation software of MAK-RTI,VC++ software installation and configuration,and the function and interface of five federal member to carry on the design specification;The design of communication interface between the host to realize the simulation of the whole communication system.Secondly,specific analysis and design the members of the general control,packaging business members of the frame synchronization and frame synchronization members of the bit stream business.The members of the general control design and operation are analyzed in detail,in order to realize the function of each module.Two members of the frame synchronization of the business,including frame synchronization module and virtual channel points with module.Frame synchronization module introduces the frame synchronization principle,analyses the leak phenomenon and the phenomenon of false alarm,describes four of frame synchronization state transition,sums up the best frame synchronization type,analyzes in detail the design of frame synchronization process,the module of the simulation results are obtained.Virtual channel was analyzed by using the module of virtual channel points in function and design,the module of the simulation results are obtained.Then,specific analysis and design of the packaging business members of the data extraction and data extraction members of the bit stream business.Packaging business data extraction members include MPDU unit data extraction module,the spatial package to extract the effective data extraction module and source module,the function of each module are analyzed in detail,the design principle and process of automatic extraction and the corresponding simulation results.Data extraction of bit stream business members include bpdus data unit to extract the effective data extraction module and source module,the function of each module are analyzed in detail,the design principle and process of automatic extraction and the corresponding simulation results.Finally,the text gives the results of this simulation system as a whole,to send to come over to receive after frame synchronization of data,virtual channel points with and data extraction,and restoration of source data effectively.