Research On The Key Technologies Of Joint Modeling And Simulation For Both Engineering And Engagement-Level

High Level Architecture (HLA) has been approved for international standard IEEE1516 since September 2000,which greatly improves the reusability and interoperability of simulation applications.However,since no single model or simulation system can satisfy all uses and users,HLA specifies only the minimum definition-set to facilitate interoperability and reuse,which is essentially an interoperating protocol for distributed simulation.Further def'mition and detailed implementation of the specific simulation system architecture which will be HLA-compliant are still required. On the other hand,Electronic Warfare (EW) simulation is currently one of the most important problems in defense domains.It has significant practical and strategic meanings for weapon demonstration and evolution of our army.Aiming at the status quo of our army that simulation systems are developed and maintained respectively by different departments and lack of general M&S architecture standards for EW simulation,the author takes part in the design and development of the fin'st Modeling and Simulation (M&S) Architecture Standard for both engineering and engagement-level in our country,which is called JMASE (Jonit Modeling and Simulation Environment).JMASE is not a simulation application, but a series of standards, protocols,interfaces,services and tools to support integration and standardization of the whole process of modeling,assembling, configuration, execution and analysis for both engineering and engagement-level.Taking xx-weapon system project as actual engineering background,the following key technologies,such as object-oriented modular pluggable software architecture,interoperating of engineering and engagement-level simulations with HLA-based task/campaign-level simulations,and common simulation services system,etc.,are researched in this dissertation.Firstly,based on full considering of maintance, reuse and portability of models,the first modular and pluggable soft-ware architecture in China is designed and implemented,which supports distributed M&S strategy.JMASE-HLA framework are also implemented to equipe JMASE with the capability of interacting with higher level simulation systems,which is a powerful tool to realize high-fidelity and multi-resolution advanced distributed simulation.Secondly,the key technology of engagement-level simulation—Time-Space and Environment Consistency is analyzed and researched.As a solution,a Modular Object Oriented Common Simulation Service System is designed and implemented,which provides consistent time,spatial and environment effects services through standard model interfaces for all simulation objects in the same way. ·Frame-based scheduling algorithms are used to enable event-based sheduling service to be used in real-time simulation,which makes JMASE more universal.·Many universal spatial phenomena are analyzed and abstracted.As a result,a" tree of spatial attachment relationships" is created to manage and maintain the spatial information of all moving objects in a simulation. In the form of Spatial Service,the consistency of simulation Space is obtained.·Through uniform description of radar signal and centralized processing of signal propagation,part of environmental consistency is achieved in the form of terrain service,atmosphere service and RF signal propagation broker.Based on the work mentioned, common modeling methods of JMASE Radar and EW Simulation are researched. Typical modeling examples of the basic entity elements in EW,such as propagation effects,targets,radars and jammers are presented to construct a complete EW simulation.·Double complex voltages description of radar signal is used in RF transmission effects modeling,by which not only phase information is reserved, but arbitrary polarization type can be expressed.It is an improvement in modeling method compared with ordinary models.·General JMASE-based radar signal model and pre-processing approaches are put forward to facilitate coherent video signal simulation in radar receiver.·Using the function of spatial attachment implemented in Spatial Service,the unitization of target's movement and its signature as well as the distributed modeling of carder's movement and radar signal processing are realized,by which M&S efficiency is uplifted and the reusability and interoperability of models are improved.At last,an actual six-degree-of-freedom (6DOF) intercept simulation of some active homing-guided ground-to-air missile is given to demonstrate joint M&S of both engineering and engagement-level based on JMASE and SIMULINK, which is the first time in home.·Compatibility of SIMULINK models with JMASE common simulation service system is analyzed and researched.·To overcome the shortcomings of traditional missile simulation framework,an object-oriented framework based on JMASE is proposed.·Some valuable datas and conclusions are obtained through thousands of simulation trials with different parameters and configurations. All these datas have been provided to xx-weapon system project. ·Interlinkage of JMASE and KD-HLA/RTI is realized.The research results of the thesis have been directly used in the design,implementation and application process of JMASE.JMASE 3.0 version has been formally released since March 2006.It has been adopted by several domestic research institutions and good results are obtained in domains such as aviation,EW and multi-sensors fusion.