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《电子科技文摘》2006,(12)
水面舰艇编队对敌舰艇反导防御观察组织[刊,中]/孔令富//指挥控制与仿真.-2006,28(5).-56-59(L)针对反导防御对海观察组织的特点和水面舰艇编队在反导防御观察系统中的作战任务.运用定性定量分析法,得到了对敌水面舰艇编队反导防御观察区域与观察系统工作时间的计算模型。结合该模型与舰艇编队战术使用理论,探讨了海上对敌编队反导防御观察的组织方法,为水面舰艇的综合反导防御作战提供有价值的理论依据。参4基于云理论的预警探测系统作战效能评价[刊,中]/李春荣//电子信息对抗技术.-2006,21(5).-36-39(G)科学评价预警探测系统作战效能是指导其发展建设的重要基础。本文通过建立预警探测系统作战效能模型,确定了评价指标,尝试采用云重心评价方法对预警探测系统的作战效能进行评价。参3 相似文献
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基于空间决策多智能体系统的海战场态势预测 总被引:2,自引:2,他引:0
分析并建立了一种基于多智能体系统(MAS)的海战场态势演变模型.模型设计了包括单舰、舰艇编队指挥舰和岸基指挥中心的3层智能体结构,利用一种基于"人工势场"的态势分析方法,做出空间决策,从而模拟出海战场态势演变的过程.给出了基于该模型的仿真实例. 相似文献
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为提高舰艇编队多站无源时差定位(TDOA)精度,必须解决水面舰艇平台间高精度的测距和时间同步问题。研究分析了几种时间同步技术,提出一种适用于舰艇编队的改进型双向比对时间同步控制技术,通过仿真实验得到舰艇间时间同步误差在7.5ns以内,测距精度在2.5m内。 相似文献
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着眼于航路规划技术在舰艇编队导弹攻击中的应用,根据编队导弹航路规划的特点,给出了编队导弹航路规划的过程,设计了一个以此为背景,基于高层体系结构(HLA)的可扩展、开放式仿真体系结构。为了描述仿真需求,运用UML可视化建模技术,设计了仿真系统的静态结构模型和动态行为模型。依据HLA/RTI规范,设计开发了仿真联邦的联邦/仿真对象模型,阐述了联邦成员的实现过程和时间管理方法,实现了一个可重用、具有互操作性的编队导弹航路规划仿真联邦。为作战研究、战术应用论证和装备发展提供了一个参考试验平台。 相似文献
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为了对C3I系统效能进行有效的评估,首先分析了影响C3I系统效能的各种因素,建立了评价其效能的层次指标体系,然后运用模糊综合评判方法,建立了二级模糊综合评估模型,并结合专家评判法介绍了该模型的具体应用过程。 相似文献
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模糊评价在自动化系统生存能力评估中的应用 总被引:2,自引:0,他引:2
生存能力是指挥自动化系统的一个重要指标。建立评价生存能力的指标体系和评价模型,是研究提高系统生存能力的重要问题。基于加权平均方法,对传统的AHP方法进行改进,采用三标度法构造判断矩阵,避免了九标度法构造判断矩阵时权重选择的模糊性,减少了评价者的主观影响,提高了准确性,具有一定的现实意义。 相似文献
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美国国防部已颁布了C^4ISR(Command,Control,Communications,Computers,Intelligence,Surveillance,and Reconnaissance)体系结构,以满足建立军队联合作战系统的需求。面向对象分析是构筑C^3I(Command,Control,Communications,Computers,Intelligence)系统体系结构的基本方法,对基于UML(Unified Modeling Language)面向对象体系结构的开发方法作了一般性的描述,它包括三个阶段:分析、综合和评价。指出了用UML产品在描述美国防部CAISR体系结构方面的一些限制,提出了从UML产品映射到可用于逻辑的、行为的和性能方面体系结构的评价的CPN(Colored Petri Nets)模型的方法,并详细阐述了此转换过程。最后应用实例表明了该方法的可行性和实用性。 相似文献
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根据C^3I对软件系统设计的实用需求,重点对软件系统测试方法以及软件系统效能(可靠性,可维护法,可移植性,功能效)评估技述进行了研究,并对C^3I系统软硬平台设计技术提出了建议。 相似文献
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Cognitive Radio (CR) system based on Orthogonal Frequency Division Multiple Access (OFDMA), such as Wireless Regional Area
Networks (WRAN) and Worldwide Interoperability for Microwave Access (WiMAX), often attempt to improve performance via dynamic
radio resource management, which is characterized as concurrent processing of different traffic and nondeterministic system
capacity. It is essential to design and evaluate such complex system using proper modeling and analysis tools. In the previous
work, most of the communication systems were modeled as Markov Chain (MC) and Stochastic Petri Nets (SPN), which have the
explicit limitation in evaluating adaptive OFDMA CR system with wide area traffic. In this paper, we develop an executable
top-down hierarchical Colored Petri Net (CPN) model for adaptive OFDMA CR system, and analyze its performance using CPN tools.
The results demonstrate that the CPN can model different radio resource management algorithms in CR Systems, and the CPN tools
require less computational effort than Markov model using Matlab, with its flexibility and adaptability to the traffics which
arrival interval and processing time are not exponentially distributed. 相似文献
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Call Admission Control (CAC) is one of the key traffic management mechanisms that must be deployed in order to meet the strict requirements for dependability imposed on the services provided by modern wireless networks. In this paper, we develop an executable top-down hierarchical Colored Petri Net (CPN) model for multi-traffic CAC in Orthogonal Frequency Division Multiple Access (OFDMA) system. By theoretic analysis and CPN simulation, it is demonstrated that the CPN model is isomorphic to Markov Chain (MC) assuming that each data stream follows Poisson distribution and the corresponding arrival time interval is an exponential random variable, and it breaks through MC??s explicit limitation, which includes MC??s memoryless property and proneness to state space explosion in evaluating CAC process. Moreover, we present four CAC schemes based on CPN model taking into account call-level and packet-level Quality of Service (QoS). The simulation results show that CPN offers significant advantages over MC in modeling CAC strategies and evaluating their performance with less computational complexity in addition to its flexibility and adaptability to different scenarios. 相似文献
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Hovorka R. Tudor R.S. Southerden D. Meeking D.R. Andreassen S. Hejlesen O.K. Cavan D.A. 《IEEE transactions on bio-medical engineering》1999,46(2):158-168
Diabetes advisory system (DIAS) is a decision support system, which has been developed to provide advice on the amount of insulin injected by subjects with insulin-dependent diabetes mellitus (IDDM). DIAS employs a temporal causal probabilistic network (CPN) to implement a stochastic model of carbohydrate metabolism. The CPN network has recently been extended to provide also advice to subjects with noninsulin-dependent diabetes mellitus (NIDDM). However, due to increased complexity and size of the extended CPN the calculations became unfeasible. The CPN network was, therefore, simplified and a novel approach employed to generate conditional probability tables. The principles of dynamic CPNs were adopted and, in combination with the method of conditioning, learning, and forecasting, were implemented in a time- and memory-efficient way. An evaluation using experimental data was carried out to compare the original and revised DIAS implementations employing data collected by patients with IDDM, and to assess the a posteriori identifiability of model parameters in patients with NIDDM 相似文献