舰艇自防御的威胁排序方法研究

威胁评估与排序是舰艇自防御系统必须具备的重要功能。在多指标决策理论的基础上,结合灰色系统理论和逼近理想解方法,提出了灰色逼近理想解的威胁排序算法。首先通过建立舰艇自防御的空中威胁排序指标体系,得到各个指标的隶属度函数,再通过主客观结合的有序二元比较法得到威胁评估指标的权重,最后通过逼近理想解的灰色关联度方法对空中目标进行威胁评估与排序,并研究了分辨系数对威胁排序的影响。通过舰艇自防御防空作战实例证明了算法的有效性和工程实用性。     

超视距协同空战协同表现评价模型

针对超视距协同空战中的协同网络表现评价问题,在分析影响超视距空战协同效果因素的基础上,提出协同满意度概念,构建协同满意度评价指标体系。研究了基于二元语义模型的协同满意度评价方法,最后实例验证了评价模型和评价方法的可行性,为有效进行超视距协同空战的训练和管理提供了依据。     

Expanding the Dragon’s Reach:The Rise of China’s Anti-access Naval Doctrine and Forces

Among the multiple dimensions of the tous azimuths modernisation of Chinese naval forces, the development of China’s anti-access capacity has recently elicited considerable interest. The important link between this capacity and an overarching vision of the use of force – i.e. a naval doctrine – has, however, often been left implicit. This article shows that the particular development of China’s naval anti-access forces – more precisely, forces with an impact on the naval balance – can be explained by a shift of China’s naval doctrine towards a distinctly pre-emptive posture, which, itself, stems from the set of constraints imposed by the framework of ‘local war under informationised conditions’.     

Hardening the Hard,Softening the Soft: Assertiveness and China’s Regional Strategy

There is a growing view that the emerging brand of Chinese regional diplomacy in recent years is increasingly assertive. This article attempts to make better sense of this perceived more forceful Chinese diplomacy. It argues that Chinese regional behavior is more profitably understood through the lens of a two-pronged foreign policy strategy that combines two particular aspects. One is a tougher and more uncompromising approach toward issues that China regards as concerning its core interests. The other is a more flexible and cooperative position toward interests that, while significant, are of secondary importance.     

Research on fuze microswitch based on corona discharge effect

Abnormal voltages such as electrostatic, constant current, and strong electromagnetic signals can erro-neously trigger operation of MEMS pyrotechnics and control systems in a fuze, which may result in casualties. This study designs a solid-state micro-scale switch by combining the corona gas discharge theory of asymmetric electric fields and Peek's Law. The MEMS switch can be transferred from "off" to"on" through the gas breakdown between the corona electrodes. In the model, one of the two electrodes is spherical and the other flat, so a non-uniform electric field is formed around the electrodes. The theoretical work is as follows. First, the relation among the radius of curvature of the spherical electrode, the discharge gap, and the air breakdown voltage is obtained; to meet the low voltage (30-60 V) required to drive the MEMS switch, the radius of curvature of the spherical electrode needs to be 10-50 μm and the discharge gap between the two electrodes needs to be 9-11 μm. Second, the optimal ratio ε is introduced to parameterize the model. Finally, the corona discharge structural parameters are determined by comparing the theoretical and electric field simulation results. The switch is then fabricated via MEMS processing. A hardware test platform is built and the performing chip tested. It is found that when the electrode gap is 9 μm, the electrostatic voltage is at least 37.3 V, with an error of 2.6% between the actual and theoretical air breakdown voltages. When the electrode gap is 11 μm, the electrostatic voltage is at least 42.3 V, with an error of 10.5% between the actual and theoretical air breakdown voltages. Both cases meet the design requirements.     

带紧扰动的m-增生算子的拓扑度理论

本文借助于一种单值化技巧,以经典的Leray-Schauder度为工具,构造了带紧扰动的m-增生算子的拓扑度。并讨论了该度的基本性质,导出了一个值域定理与锐角原理。     

一种灰色关联度的改进方法

在回顾和总结已有关联度方法的基础上,提出了一种同时考察评价对象与理想值之间相似性和相近性的综合关联度,包括改进型斜率关联度和近似面积关联度,分别给出了两种关联系数和关联度的计算方法,并详细论述了二者几何关系和量值关系,便于决策者根据不同偏好选取不同权重;该综合关联度满足一致性和规范性要求,经过均值比变换后也可满足无量纲化保序性;最后,通过典型算例验证了方法的有效性。     

军用飞机服役过程的风险管理

墨菲定理指出系统危险源必然引发事故,海恩法则强调事故发生是量的积累,因此欲提高飞机这种高风险系统的服役安全就必须展开风险管理。风险管理是安全管理的重要组成部分,系统安全性理论是安全管理的基础,在对系统安全性进行定义、明确目标和组成的基础上,建立了一种适用于飞机服役过程的风险管理模型,并分析了其风险控制步骤,对于飞机服役过程的风险管理有一定的指导意义。     

基于恒压源的精密恒流源研究

为了提高恒流源的精度,减少温度对恒流源稳定度的影响,分析了恒流源稳定度不高的原因,比对了恒压源器件,提出了采用高精度恒压源控制电流源的方法实现精密恒流源的思想,给出了电路设计原则、具体电路、原理分析及注意事项,并对压控精密恒流源进行了实验测试.研究方法显著提高了恒流源的精度.     

模糊推理方法在无人机编队目标分配中的应用

本文主要针对无人机编队作战中的目标分配问题进行了研究,利用模糊推理理论对定性条件进行了分析,并建立了定性条件的优选决策矩阵,将各个定性条件下的优选决策矩阵进行了合成,给出了不同目标定性条件重要度的相对隶属度关系,最后给出了基于模糊推理的无人机编队作战中目标分配方法的数学模型,并进行了求解。给出的算例验证了模型的可行性和有效性。