潜艇信息系统信息安全与纵深防护策略研究

随着网络中心战的发展,信息安全问题在现代潜艇系统中的重要性日益凸显。首先分析潜艇信息安全问题的背景、总结其研究现状,然后研究了潜艇信息安全需求及属性定义,探讨了潜艇信息系统信息安全防护整体框架,在此基础上提出了一种综合静态安全防护和动态运行安全防护的潜艇信息系统信息安全纵深防护体系结构。以期为解决潜艇系统设计中的安全缺陷、建立潜艇信息安全防护体系,辅助系统维护、保障系统安全提供基础。     

潜艇动力抗沉运动特性分析

采用潜艇垂直面操纵性运动方程、破损舱进水方程和压载水舱排水方程联立构成的潜艇动力抗沉运动方程,研究了2艘不同吨位潜艇的损管特性和动力抗沉运动,其中动力抗沉运动计算包括单独高压气吹除和高压气吹除加操上浮舵2种情况,并讨论了单独高压气吹除、高压气吹除与操舵联合作用的抗沉效能,从而明确了操舵在动力抗沉中的作用。通过对两艇的仿真计算结果的讨论与分析,并用动力不沉性指数Ka定量地评估了转舵在潜艇动力抗沉中的作用。计算结果表明,潜艇中、首部隔舱破损时,转舵在动力抗沉中效能显著,尾部隔舱破损时效能不明显,甚至作用相反。     

基于方位量测的舰艇对潜定位技术研究*

结合舰艇拖曳线列阵声纳实际搜潜装备,利用舰载线列阵声纳测得的潜艇目标方位信息,建立了基于方位量测的舰艇对潜艇目标定位的数学模型,给出求解潜艇运动参数的定位算法,并对定位误差进行了分析,在定位模型及算法的基础上,仿真研究了潜艇与舰艇之间的初始距离、舰艇测得潜艇目标初始方位角、潜艇航向等因素对定位性能的影响,给出仿真结果并进行了分析,该结果对于指导实际反潜具有一定的实用价值.     

潜射反舰导弹作战效能的模糊综合评判

潜射反舰导弹是现代潜艇作战的重要武器,对其作战效能的评价长期以来一直采用单一指标,无法全面准确的进行评价.通过对影响潜射反舰导弹作战效能各因素的分析,建立了作战效能综合评价的指标体系.应用模糊综合评判的方法,在借鉴WSEIAC模型的基础上建立了数学模型,并给出算例与仿真.研究结果表明此方法可较好地评估潜射反舰导弹的作战效能,并为其研发及使用提供决策依据.     

Nuclear weapons and alliance institutions in the era of President Trump

The swearing in of Donald Trump as the 45th President of the United States presages, at the very least, a period of flux in American strategy with respect to the relationship between nuclear weapons and alliances. In this response to three thoughtful rejoinders to our article, “Nuclear weapons, the United States and alliances in Europe and Asia: Toward an institutional perspective,” we clarify key aspects of our argument and discuss why alliance institutions are likely to be relatively robust in the face of change, how they can influence national decision-making, and argue that they may exert a moderating influence over the new administration.     

Indian Military Modernization and Conventional Deterrence in South Asia

In recent years, headline grabbing increases in the Indian defense budget have raised concerns that India’s on-going military modernization threatens to upset the delicate conventional military balance vis-à-vis Pakistan. Such an eventuality is taken as justification for Islamabad’s pursuit of tactical-nuclear weapons and other actions that have worrisome implications for strategic stability on the subcontinent. This article examines the prospects for Pakistan’s conventional deterrence in the near to medium term, and concludes that it is much better than the pessimists allege. A host of factors, including terrain, the favorable deployment of Pakistani forces, and a lack of strategic surprise in the most likely conflict scenarios, will mitigate whatever advantages India may be gaining through military modernization. Despite a growing technological edge in some areas, Indian policymakers cannot be confident that even a limited resort to military force would achieve a rapid result, which is an essential pre-condition for deterrence failure.     

Missile Strategy in a Post-Nuclear Age

While the arrival of nuclear weapons coincided roughly with the development of short, medium, intermediate, and eventually intercontinental missiles, the contribution of missile technology to the deterrence equation is often lost. If nuclear weapons were eliminated, even new generation missiles with conventional payloads could struggle to render effective deterrence. But some of the physical and psychological effects commonly ascribed to nuclear weapons could still be in play. And in a world without nuclear weapons, thinking about the use and control of force from the nuclear age would also deserve renewed attention.     

基于组件技术的分布式潜艇作战仿真系统

提出采用JavaEE/EJB组件技术开发分布式潜艇作战仿真系统,根据潜艇作战机理,建立了分布式潜艇作战仿真模型体系结构,设计了分布式潜艇作战仿真系统的软件架构,分析了系统开发过程中采用的技术协议,并研究了基于组件技术的分布式潜艇作战仿真系统实现方法。     

运动潜艇的感应电场分布

采用相对论电磁变换法计算了单个磁偶极子匀速运动时产生的感应电场三分量。利用沿圆柱表面排列的磁偶极子阵列近似模拟潜艇的磁场分布,通过对磁偶极子阵列运动感应电场三分量的积分运算,得到了潜艇运动感应电场的分布规律,解决了由高斯定理计算感应电场因电场方向不同难以进行积分运算的难题。利用海水中布放的传感器,实际测量了运动潜艇模型的感应电场,测量结果验证了所提出的感应电场计算方法的正确性。     

线导加尾流自导鱼雷保持距离导引法

依据线导加尾流自导鱼雷捕获和跟踪目标尾流的特殊要求,分析了现有导引方法的不足。利用鱼雷位置点与目标方位线之间的几何关系,提出了"保持距离导引法"的概念、建立了线导加尾流自导鱼雷的导引模型,从根本上消除了通过估计目标距离而确定目标方位修正量的困难,并通过仿真计算分析了这种方法的特点及作战应用的可行性。