面向组件的仿真系统构建方法研究

随着软件组件技术的不断发展,基于组件的软件开发方法在仿真领域逐渐被接受,特别是基于分布式的仿真软件开发。SISO（仿真互操作标准组织）提出的BOM（基本对象模型）通过标准化规范描述面向组件的仿真模型,为构建具有可扩展、可组合和可互操作的仿真系统提供了面向组件的实现技术。首先,描述BOM的模板结构及其体系结构,设计基于BOM的仿真模型组件结构,分析这种结构的仿真模型组件间的互操作性;接着从概念层次、联邦成员层次和联邦层次三个不同层次提出面向组件的仿真系统构建方法;最后讨论一种通用的仿真运行框架,通过组合不同的仿真模型组件实现仿真系统的快速构建。

Abstract：

With the development of the software component technique, the components based software development method is accepted in the simulation domain and specifically in the distributed simulation’s software development. The standard of Base Object Model （BOM） developed by SISO （Simulation Interoperability and Standard Organization） is the component-oriented specification of simulation models which gives a component-oriented technique to construct extensible composable and interoperable simulation systems. Firstly, the template and architecture of BOM were described based on which the structure of simulation model components were designed and the interoperation between them were analyzed; Secondly, the processes for constructing simulation systems were argued from the concept level and the federate level to the federation level; Lastly, by composing various of simulation model components, the general simulation running framework which was argued provided component-oriented capabilities to rapidly building simulation systems.     

基于组件的水面战视景仿真系统关键技术研究

为了更加生动逼真地体现水面战视景仿真中导弹发射、导弹命中、舰炮开火、雷达搜索、干扰弹展开等攻防对抗的细节,针对仿真系统设计、组件化建模、组件化模型驱动等关键技术进行深入研究。提出了多粒度建模与替代子模型法相结合的组件化建模方法,通过配置链表内存映射的方法对组件化模型进行动态加载。所设计的基于组件的水面战视景仿真系统作为某大型分布式水面战仿真系统一个联邦成员,通过HLA接口接收联邦中相应联邦成员如导弹、火炮、雷达、干扰系统等的数据,在三维视景中驱动组件化模型。

Abstract：

In order to reflect more vivid details of attack and defense of surface warfare scene simulation such as missile launch, missile hit, gun fire, radar search and decoy expand, several key technologies including system designing, component-based modeling, component-based model-driven were researched. A component-based modeling method was proposed which combined multi-granularity modeling and sub-model replace. This method could load component-based model dynamically by list configuring and memory mapping. The component-based surface warfare scene simulation system designed as a federate of a large distributed surface warfare simulation system federation could receive data of the corresponding federate such as missile, artillery, radar and jamming system, and then the component-based model in the 3D scene was driven.     

基于Extend与HLA的装备保障仿真集成研究

分析了Extend应用于装备保障仿真的不足,在讨论基于HLA的装备保障仿真系统的基础上,提出了Extend与HLA/RTI的四种仿真集成方式,依据Extend模型是否需要与HLA/RTI进行时间同步分别给出了集成方法,设计了基于适配器的Extend与HLA集成框架,详细说明了适配器的组成功能及工作流程,最后利用一个装备保障仿真系统应用实例证明了仿真集成的思路是可行的和必要的。

Abstract：

Because of the shortages of Extend software applied to equipment support simulation,four integration types between Extend and HLA were proposed about the building of equipment support simulation system based on HLA.According to whether Extend simulation model was synchronous to HLA/RTI on the mechanism of advance simulation time,the methods were respectively put forward to support these types,and an integration architecture between Extend and HLA was designed based on a general adaptor.The components and functions of this adaptor,and its running mechanism were detailedly analyzed later.Finally,an application of a simulation system proves that the idea to integrate the two platforms is feasible.     

基于BOM的STSS系统仿真设计与实现

以空间跟踪与监视系统（Space Tracking and Surveillance System,STSS）为仿真对象,基于高层体系结构（High Level Architecture,HLA）分布式仿真技术设计、开发STSS仿真系统。分析了STSS技术特点及仿真需求,按照基本对象模型（Base Object Model,BOM）开发标准构建系统的层次化联邦架构,提高了系统开发效率和模型的可重用性。通过对不同场景的多次仿真,初步验证了STSS的性能指标,说明该系统具有良好的适应性。

Abstract：

Based on HLA distributed simulation technology, design and implementation of STSS simulation system, the technical traits of STSS system and demands of simulation were analyzed. According to BOM development standard, a framework in hierarchy of STSS simulation system was constructed, which has effectively improved the efficiency of system realization and the capability of model reuse. By simulating the different scenarios repeatedly, the performance parameter of the STSS simulation system was tentatively verified, and applicability of the simulation system was proved.     

Electronic market models for decision support systems on the Web

With the prevalence of the Web, most decision-makers are likely to use the Web to support their decision-making. Web-based technologies are leading a major stream of researching decision support systems (DSS). We propose a formal definition and a conceptual framework for Web-based open DSS (WODSS). The formal definition gives an overall view of WODSS, and the conceptual framework based on browser/broker/server computing mode employs the electronic market to mediate decision-makers and providers, and facilitate sharing and reusing of decision resources. We also develop an admitting model, a trading model and a competing model of electronic market in WODSS based on market theory in economics. These models reveal the key mechanisms that drive WODSS operate efficiently.     

An approach to measuring business-IT alignment maturity via DoDAF2.0

Measuring the business-IT alignment(BITA)of an organization determines its alignment level,provides directions for further improvements,and consequently promotes the organizational performances.Due to the capabilities of enterprise architecture(EA)in interrelating different business/IT viewpoints and elements,the development of EA is superior to support BITA measurement.Extant BITA measurement literature is sparse when it concerns EA.The literature tends to explain how EA viewpoints or models correlate with BITA,without discussing where to collect and integrate EA data.To address this gap,this paper attempts to propose a specific BITA measurement process through associating a BITA maturity model with a famous EA framework:DoD Architectural Framework 2.0(DoDAF2.0).The BITA metrics in the maturity model are connected to the meta-models and models of DoDAF2.0.An illustrative ArchiSurance case is conducted to explain the measurement process.Systematically,this paper explores the process of BITA measurement from the viewpoint of EA,which helps to collect the measurement data in an organized way and analyzes the BITA level in the phase of architecture development.     

Study on the Mode of Payment Distribution About AVEs

In this paper, the fixed-payment distribution mode of Agile Virtual Enterprises （AVEs） is studied based on game theory, and the result is compared with that of the share income mode. Finally, the paper proposes that in the circumstance of manufacturing resource information web, the goal function of the game is changed thus promotes the Nash equilibrium effort level approaches or equals to the Pareto equilibrium effort level.     

Opportunistic spectrum sharing in software defined wireless network

Over the past few decades, the world has witnessed a rapid growth in mobile and wireless networks（MWNs） which significantly change human life. However, proliferating mobile demands lead to several intractable challenges that MWN has to face. Software-defined network is expected as a promising way for future network and has captured growing attention. Network virtualization is an essential feature in software-defined wireless network（SDWN）, and it brings two new entities, physical networks and virtual networks. Accordingly, efficiently assigning spectrum resource to virtual networks is one of the fundamental problems in SDWN. Directly orienting towards the spectrum resource allocation problem, firstly, the fluctuation features of virtual network requirements in SDWN are researched, and the opportunistic spectrum sharing method is introduced to SDWN. Then, the problem is proved as NP-hardness. After that, a dynamic programming and graph theory based spectrum sharing algorithm is proposed.Simulations demonstrate that the opportunistic spectrum sharing method conspicuously improves the system performance up to around 20%–30% in SDWN, and the proposed algorithm achieves more efficient performance.     

基于高层体系结构对象模型的联邦成员软件框架自动生成研究与实现

在基于HLA／RTI的联邦开发中，降低成员软件开发者需要理解HLA／RTI的程度，简化联邦成员软件的开发过程是一个急需解决的问题。本文不典型成员的软件结构和程序流程进行了分析，设计了一种基于HLA对象模型（FOM／SOM）的联邦成员软件框架实现方法，并实现了一种能够自动生成联邦成员软件框架的工具FedWizard，使用该工具可生成联邦成员的C＋＋框架代码。     

基于HLA作战仿真成员设计参考模型

对当前HLA仿真机制功用的局限性进行了深刻分析,由此提出构架作战仿真成员设计参考模型的构想.对作战仿真成员的概念模型进行抽象分析,将作战仿真成员中的实体要素分为指挥实体、执行实体、战场环境要素实体三大类.应用MAS理论,构建了作战仿真成员的通用框架;并基于动力驱动机制设计了指挥实体Agent和执行实体Agent的通用模型框架.从建模方法和开发模式两方面对作战仿真成员的开发过程给出指导性建议.该参考模型可以为重构或开发新的作战仿真成员提供有益参考.     

基于组件的联邦成员生成框架设计与实现

高层体系结构（HLA）作为分布式交互仿真的标准,从很大程度上提高了仿真模型的可重用性和互操作性。但由于HLA接口规范中提供的服务数量庞大,这就使得仿真开发人员在理解HLA/RTI运行机制上需要耗费大量的时间而延误仿真逻辑模型的开发进度,因此为仿真开发人员提供一个通用的联邦框架,利用框架中简单的、面向对象的接口进行联邦成员开发成为一个关键问题。将基于组件的开发方法实现一种联邦成员生成框架,能通过FOM/SOM和用户输入,生成联邦成员框架代码,实现典型成员的公共功能。     

面向虚拟仿真环境的RTI性能测试研究

针对虚拟仿真环境中RTI的性能需求设计测试指标,测试指标包括对RTI能够支持多大规模的分布式虚拟仿真进行的规模支持能力测试;属性更新延迟和交互的延迟更新;反映系统在单位时间内能够处理的最大容量的数据包的吞吐量测试;在联邦成员连续请求时间推进的情况下,RTI对其请求的响应时间的时间推进请求响应测试;联邦成员在占用一定的计算时间时,对系统其它性能指标的影响的基于盟员负载的真实仿真测试。对于上述测试指标,提出了相应的测试方案,通过对测试数据的分析比较不同RTI和盟员开发的实现方案如:RTI的体系结构、本地线程方式、数据传输的打包方式对RIT性能指标影响的定量分析,进一步提出得到满足分布式虚拟仿真环境要求的实时性RTI的技术实现方案。     

基本对象模型(BOM)在HLA仿真系统中的应用

为了促进在世界范围政府部门和非政府部门的仿真互操作能力,仿真互操作标准组织(SISO)引进BOM支持和提高仿真组件的重用性。BOM作为一种促进互操作性、重用性和可组合性的实现机制,鼓励灵活、快速、有效地开发和管理模型。通过研究BOM模板规范和体系结构,设计基于BOM的通用HLA仿真框架,实现通过基于BOM的仿真模型组件快速组合和重用,从而构建具有功能可扩展性和规模可控性的多样性联邦成员和联邦,提高分布式仿真系统的重用性和互操作性。     

基于HLA的激光雷达跟瞄仿真系统设计与实现

根据HLA联邦模型的开发步骤设计并实现了激光雷达跟瞄仿真系统,包括概念模型开发、FOM/SOM模型建立、FED文件生成等。本系统将MAKRTI和视景仿真软件RTG结合到一起,实现了各个联邦成员功能,并给出了CCD仿真成员的仿真框架流程图以及部分代码清单。     

基于MAS的空袭目标流仿真成员设计与实现

对MAS在HLA仿真中的应用进行了可行性分析，提出了其应用准则，并在比较慎思式Agent、反应式Agent和一般对象三者优缺点的基础上，对空袭目标流仿真成员进行了详细设计与实现。这不仅为基于HLA空袭目标流系统的后期开发打下了良好基础，为HLA仿真中联邦成员的设计与实现提供了一种有益的尝试和思路。     

基于HLA的水面舰艇鱼雷防御系统仿真平台

根据水面舰艇防御鱼雷的作战需求,提出了基于HLA的水面舰艇的鱼雷防御系统仿真平台的研究开发方案。阐述了水面舰艇防御鱼雷的过程,并设计出防御系统总体层次结构,具体介绍了仿真系统导演台和水面舰艇火控系统的功能及其仿真设计。建立了系统仿真平台的联邦构架,给出了系统联邦工作流程以及联邦FOM/SOM,介绍了联邦成员的同步实现,最后说明了系统的实现。     

基于HLA的水下战仿真系统研究

针对水下对抗仿真环境需支持多种不同对抗样式水下战仿真实验的功能需求,提出了一种基于HLA的可扩展的开放式水下战仿真体系结构,基于该结构,仿真用户可以通过目标系统重组方式组建具体的联邦应用系统。并就系统设计、开发及实现过程中所需解决的主要关键技术,如FOM/SOM建模、成员框架结构设计、DIS/HLA网关、仿真运行机制、网络统计等分别作了讨论。本项研究对其它领域内基于HLA的联邦设计和开发具有参考价值。     

基于MDA和HLA的仿真建模研究

针对分布仿真系统的互操作和可重用问题,将MDA技术应用到基于HLA的仿真建模。首先,介绍了HLA和MDA技术,并探讨了将两者结合起来的可能;然后,在此基础上研究了从军事概念模型入手,基于MDA的军事仿真建模。并介绍了PIM(平台独立模型)到HLA平台相关模型(PSM)的变换技术和方法;最后探讨了基于HLA分布仿真系统的设计模型和生成途径。