共查询到18条相似文献,搜索用时 531 毫秒
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在现代武器装备中,可靠性指标已成为武器装备战技性能指标的重要组成部分,它对装备的作战能力、生存力、维修能力和使用保障费用等产生重要影响,并关系着武器装备的作战性能及效能的发挥。因此,科学合理地选择可靠性鉴定试验方案就显得尤为重要。本文介绍了如何选择产品的可靠性鉴定试验方案,并通过工程实例提出了一种新的可靠性鉴定试验方案。 相似文献
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重量管控是使飞机满足重量设计指标和重心控制要求,达到预期的载荷、航程、飞行性能和操纵品质等,并使飞机满足设计和使用要求,具备市场竞争优势。本文从电子电气专业的角度,介绍飞机在设计、制造各个阶段的重量管控过程,包括机载成品、零部件、标准件、电缆重量的管控,并对优化设计减重进行了介绍。 相似文献
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现代战斗机设计对飞机的气动性能和功能综合提出更高的要求,这促使先进战斗机采用综合飞行器管理系统实现飞机的性能、可靠性、维修性的提高和系统重量、体积、布线的复杂性、全寿命周期费用的降低等.探讨了F-22、EF - 2000和F-35战斗机的综合飞行器管理系统的体系架构、计算机组成、系统总线和接口单元构成与主要功能;对这些... 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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网络中心战中美军空袭作战体系生存能力评估 总被引:1,自引:0,他引:1
针对“网络中心战”中的美军空袭作战体系的特点,研究并分析了其生存能力的影响因素及相关计算公式,提出了一种评估“网络中心战”中的美军空袭作战体系生存能力的综合方法。考虑到生存能力的提高必须以费用为代价,提出了一种基于“网络中心战”的美军空袭作战体系生存能力/作战费用综合评估方法。通过仿真计算,分析了影响生存能力的主要因素,验证了所提方法的正确性。 相似文献
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Manijeh Keshtgary A. H. Jahangir Fahad A. Al-Zahrani Anura P. Jayasumana 《Photonic Network Communications》2006,11(1):15-27
Network Survivability is defined as the ability of a network to support the committed Quality of Services (QoS) continuously
in the presence of different failure scenarios. Both availability and performance degradation of a system in presence of failure
are integral components of survivability evaluation. Therefore, a composite model is presented for network survivability that
includes system availability analysis to find out the cost due to system downtime, and system failure impact analysis to find
out the transient performance degradation when failure occurs. A new analytical technique is presented to evaluate the excess
loss due to failure (ELF) as the transient performance degradation when the system is operating in gracefully degraded states.
Single and multiple link failures as well as node failures are considered. An algorithm is proposed to carry out the steady
state availability analysis of a network even when the available paths between a pair of nodes are non-disjoint. A recursive
generalized form of the availability algorithm when there are multiple paths available between a pair of nodes is presented.
The availability model and the performance model are combined to construct a hierarchical model to evaluate the network survivability
performance. Simulation results are used to validate the proposed model. A WDM network with wavelength conversion is considered
as an example for this evaluation. 相似文献
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电子侦察船生存能力的高低将直接影响其海上侦察任务的完成,如何对其进行正确评估是提高电子侦察船生存能力的关键所在。目前,对电子侦察船生存能力评估方法的研究有很多,但主要都是集中在定性分析上,定量评估的还未见相关报道。本文通过在对电子侦察船生存能力进行深入分析的基础上,建立起电子侦察船生存能力指标体系和评估模型,并运用定性与定量相结合的方法来评估,提出的评估方法科学合理,不但对提高电子侦察船的生存能力具有指导意义,而且对其他海上作战平台生存能力的评估具有借鉴价值。 相似文献
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In order to appropriately select and adjust response countermeasures,it is necessary to evaluate response effectiveness.Although a large amount of effort has been spent on the evaluation of risk and threat situations,the existing schemes are not suitable to evaluate response effectiveness,because the sechems require that all the information used for evaluation is complete,which is difficult to implement in the real environment.To address the problem,a fuzzy scheme was proposed to deal with incomplete information (i.e.,missing elements of judgment matrix and missing data of indicators) and the response effectiveness was evaluate.Firstly,a hierarchical indicator tree was design to characterize the effectiveness from the perspectives of both attack and defense.Then,the fuzzy analytic hierarchy process (FAHP) was used to calculate the comprehensive weight of each indicator.Finally,the response effectiveness was calculated using fuzzy comprehensive evaluation.In particular,to deal with the problem of incompleteness of fuzzy judgment matrix in the process of FAHP,the missing elements were completed based on the transitivity of elements.And to deal with the problem of loss data in the comprehensive evaluation,the missing data was completed based on matrix completion.The experimental results show that the proposed scheme can accurately recover the missing data and can effectively evaluate the effectiveness of response. 相似文献
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在简要介绍无线局域网发展历史和现状基础上,针对现代无线局域网通信带宽大、使用范围广以及架设简单的特点,结合其在外军下一代战术互联网中的应用,分析了无线局域网增强安全性、抗毁性以及扩展传输距离可采用的手段。提出了使用无线局域网作为低成本无线视距宽带通信手段,在未来宽带战术互联网组网通信的应用方式;并分析了典型应用场景,预测了无线局域网在未来宽带战术互联网中的应用前景。 相似文献