超空泡航行体深度跟踪串级控制策略

针对空泡与航行体之间非线性滑行力导致的超空泡航行体稳定性问题,提出了基于圆判据理论和Nelder-Mead算法的超空泡航行体深度跟踪串级控制方法。介绍了超空泡航行体数学模型以及圆判据定理基础知识。结合模型特性推导了超空泡航行体串级误差状态方程,利用圆判据定理研究了内环绝对稳定性。通过Nelder-Mead算法对内环反馈参数进一步优化。仿真分析结果表明：所提控制方法便于反馈参数整定,可以充分利用超空泡航行体的控制量实现深度跟踪。     

认知电子战综述

认知电子战通常被定义为以具备认知性能的电子战装备为基础,注重自主交互式的电磁环境学习能力与动态智能化的对抗任务处理能力的电子战形态。自其被首次提出以来,以其感知准、推理强、决策快的优势备受国内外研究学者广泛关注。随着人工智能新理念、新技术、新应用的不断涌现,认知电子战步入崭新的发展阶段。为捕捉其未来发展方向,从人工智能角度出发,总结并丰富了认知电子战概念内涵,梳理认知电子战的发展脉络及外国典型项目,搭建认知电子战系统框架及架构,从感知、判断、决策等方面对认知听电子战关键技术进行了全面系统综述,并总结了认知电子战面临的挑战和发展趋势。     

综合射频系统在新型装甲平台中的应用

为了应对未来信息化战争对坦克装甲平台电子射频系统提出的更高要求,提出将综合射频系统应用在新型装甲平台上。该系统采用综合孔径方式设计,可完成对空目标搜索、精确跟踪、威胁判断、电子对抗、火力指引、毁伤评估等功能,在装甲平台防护中具有至关重要的作用。首先,介绍了装甲平台的多功能综合射频系统;其次,详细分析了该系统的组成、功能和特点,简要描述了作战中的应用模式;最后,针对综合射频系统在新型坦克装甲平台的进一步应用提出了发展建议。     

Modern Sikh Warriors: Militants,Soldiers, Citizens

Central to the mainstream Sikh identity is the concept of ethically-justified force, used as a last resort. There is no place for absolute pacifism in this conception of ethical living. Fighters and martyrs occupy an important place in the Khalsa narrative, and Sikhs are constantly reminded of the sacrifices and heroism of their co-religionists of the past. This article explores how the Sikh warrior identity is manifested in the contemporary world. It examines the Sikhs who, in the 1980s and 1990s, were involved on both sides of the Punjab crisis: those militants who fought for a Sikh homeland (“Khalistan”) and those Sikhs in the Indian army who suppressed the insurgency. The article also looks beyond the militants and soldiers to Sikhs employed in modern security-related professions, the broader issue of Sikh symbols relating to the use of force, and violence within the Sikh diaspora. An examination of the Sikhs in various parts of the world reveals additional uses and consequences of ideology, whether in enlistment in the armed forces of the states in which they live, or in the support of the militancy in India, particularly in the 1980s. The conclusion is that the modern Sikh warrior is a nuanced actor behaving in various ways, some overt and some subtle: the warrior is willing to physically fight those perceived to be tyrannous, but most initiatives have shifted to pursuing justice through non-violent means, such as legal struggles for civil rights. Although armed Sikh militancy against the Indian government is in the past, there are strong residual resentments still requiring redress. All of this is of great relevance to understanding the ethics of armed force within modern Sikhism.     

Nuclear deterrence and cyber warfare: coexistence or competition?

Nuclear deterrence and cyber war seem almost antithetical in their respective intellectual pedigrees. Nuclear weapons are unique in their ability to create mass destruction in a short time. Information or “cyber” weapons, at least for the most part, aim at sowing confusion or mass disruption instead of widespread physical destruction. Nevertheless, there are some intersections between cyber and nuclear matters, and these have the potential to become troublesome for the future of nuclear deterrence. For example, cyber attacks might complicate the management of a nuclear crisis. As well, information attacks on command-control and communications systems might lead to a mistaken nuclear launch based on false warnings, to erroneous interpretations of data or to panic on account of feared information blackout. It is not inconceivable that future nuclear strike planning will include a preliminary wave of cyber strikes or at least a more protracted “preparation of the battlefield” by roaming through enemy networks to plant malware or map vulnerabilities.     

悬臂式围护桩受力性状与内力传递特征试验

为研究悬臂式围护桩结构的内力、弯矩、位移和嵌固段的变化规律及特点,结合西宁火车站综合改造工程,对该深基坑支护结构在不同开挖工况条件下悬臂桩的受力性状与内力传递特征进行现场动态测试试验。试验结果表明:悬臂桩的受力特征与理论值有所差异,在实际设计中可对其在配筋方式、混凝土强度设计、嵌固段长度等方面进行优化。试验结果可以有效优化桩身设计,为复杂基坑在开挖过程中的支护结构受力及变形提供参考性依据。     

对岸电子进攻中航母阵位确定方法?

针对航母编队对岸电子进攻作战提出了一种航母编队阵位确定的方法。基于航母编队在对岸电子进攻中的任务,提出了航母编队与岸边距离的基本要求,建立了航母编队与岸边距离的数学模型,仿真计算了模型中各个参数对航母编队与岸边距离的影响。这些模型可用于航母编队在对岸电子进攻中确定航母的阵位,满足航母编队作战使用的需要。     

部队网络信息管理规律及策略研究

网络信息管理是新形势下部队管理工作的一项重要内容,对于促进官兵全面发展、加强部队行政管理、提升信息化建设具有重要意义,加强部队网络信息管理必须遵循共享与防范相结合、标本兼治和网络信息技术与官兵素质同步提高规律,从组织领导、官兵思想、安全防护、制度落实和网管人员建设五个方面构筑部队网络信息管理有效策略.     

提高武警边防部队处置突发事件绩效的几点思考

当前,武警边防部队处置突发事件工作存在诸多问题。处置手段相对单一,针对性不强。武警边防部队应从适应信息化条件下处突工作实际需要出发,不断加强专业研究,强化处突决策及实战能力;创建多途径研究、训练模式,努力提高研练绩效,从而实现部队处突能力质的飞跃。     

逆变器-异步电机电磁噪声的分析与研究

利用Ansoft建立了样机的二维模型,计算了样机在空载运行下的各性能参数,分析了样机内的磁场分布情况.在此基础上,计算了负载大小、机壳设计尺寸和逆变器供电对异步电机电磁噪声的影响.仿真分析表明:通过合理改变机壳尺寸和质量以及选择合适的逆变器开关频率的方法可实现异步电机的降噪.