A computation procedure for the exact solution of location-allocation problems with rectangular distances

A method is presented to locate and allocate p new facilities in relation to n existing facilities. Each of the n existing facilities has a requirement flow which must be supplied by the new facilities. Rectangular distances are assumed to exist between all facilities. The algorithm proceeds in two stages. In the first stage a set of all possible optimal new facility locations is determined by a set reduction algorithm. The resultant problem is shown to be equivalent to finding the p-median of a weighted connected graph. In the second stage the optimal locations and allocations are obtained by using a technique for solving the p-median problem.     

On the treatment of force-level constraints in times-equential combat problems

The treatment of force-level constraints in time-sequential combat optimization problems is illustrated by further studying the fire-programming problem of Isbell and Marlow. By using the theory of state variable inequality constraints from modern optimal control theory, sharper results are obtained on necessary conditions of optimality for an optimal fire-distribution policy (in several cases justifying conjectures made in previous analysis). This leads to simplification of the determination of the domains of controllability for extremals leading to the various terminal states of combat. (Additionally, some new results for the determination of boundary conditions for the adjoint variables in optimal control problems with state variable inequality constraints have arisen from this work.) Some further extensions of previous analysis of the fire-programming problem are also given. These clarify some key points in the solution synthesis. Some important military principles for target selection and the valuation of combat resources are deduced from the solution. As a result of this work, more general time-sequential combat optimization problems can be handled, and a more systematic solution procedure is developed.     

N元光纤光栅传感器阵列解调信号的最低可见度分析

研究了非平衡光纤Mach-Zehnder干涉仪解调N元光纤光栅传感器阵列时的偏振衰落问题.运用邦加球和光纤偏振光传输理论,利用简化模型,通过详细的理论分析,得到优化控制下阵列传感信号最低可见度的下限表达式,并通过计算机仿真,验证了结果的正确性,并详细分析了仿真实验的结果.     

Reassessing Military Assistance to the Civil Powers: Are Traditional British Anti-Terrorist Responses Still Effective?

The provision of Military Assistance to the Civil Powers (MACP) encapsulates the traditional approach towards countering terrorism on the British mainland, which emphasises minimum force, proportionality, police primacy and the rule of law, with the military retained as a supporting instrument, being employed only as a measure of last resort. Recent terrorist incidents in major urban centres do, however, question the effectiveness of these established methods. This analysis initially codifies the conceptual issues that underscore the tensions between civil policing and military anti-terrorist approaches in the UK, and proceeds to evaluate and compare a number of operations that indicate the nature of the challenges facing the MACP apparatus. In particular, potential shortcomings in the MACP provisions are identified in the form of threat perception and deployment and enforcement gaps. The assessment finds that there are facets of MACP that are of enduring relevance in the current era, yet a continuing need persists to reconcile police and military imperatives toward serious civil disorder contingencies and conditions of emergency.     

通用防空反导火力优化分配方法

针对通用防空反导实时火力优化分配问题,分析了火力分配原则,综合考虑资源约束、空间关系约束以及人工干预等约束条件,以拦截效能最大、消耗费用最小为目标建立火力优化分配模型,并详细设计了拦截效能和消耗费用的表示模型;在该模型基础上,设计了一种基于离散粒子群的优化求解算法;通过仿真验证了模型的合理性和算法的可行性,对通用防空反导指挥控制系统研制具有一定指导意义.     

单轴旋转航位推算系统姿态误差补偿方法

针对水下载体在航行过程中由于旋转引起导航定位误差问题,对旋转航位推算导航系统进行误差分析,采用姿态四元数法推导了姿态误差方程,并提出将加速度计信号周期性变化提取的姿态角作为量测的姿态误差补偿方法,利用Sage-Husa自适应滤波器估计姿态误差并进行补偿,从而抑制陀螺漂移的影响.通过不同路径下的仿真研究,表明该算法能够提高单轴旋转航位推算系统姿态解算精度,在400 s时,姿态角精度可提高40％以上,定位精度提高49％.     

典型作战流程和分级环境下发射车生存能力改进ADC评估模型

为了综合评估发射车在作战中的生存能力,区分参数-性能-能力-效能四个层次建立武器装备评估空间,构建对象、内容和层次三个维度的评估框架,划分五类自然环境、三级威胁环境和三种作战状态,将外界环境引入评估过程,用被发现概率和损毁概率表征发射车隐蔽伪装能力和抗毁防护能力,建立发射车作战状态转移概率矩阵,提出典型作战流程和分级环境下的发射车生存能力改进可靠性、可信性、可用性综合评估模型。通过仿真分析,在不同环境和作战状态下各型发射车生存能力差异明显,模型能在性能空间、环境空间、作战流程空间多个维度动态评估发射车的生存能力,为发射车性能设计、战场运用     

超级电容起动动态过程分析与建模仿真

为了改进装甲车辆起动性能,提出了用超级电容替代蓄电池起动的方案。介绍了超级电容的特性,建立了起动系统模型并进行了仿真研究,对仿真结果进行了实验验证。结果表明:仿真与实验的结论基本吻合,显示了该方案的可行性。     

作战能力与作战效能评估方法研究

作战能力和作战效能是军事运筹学中既有联系又有区别的两个基础性概念。在实际研究中,这两个概念经常被混淆,导致评估方法选取不适当。本文首先阐述了作战能力和作战效能概念的定义,然后探讨了这两个概念的区别与联系,最后列举了常用的作战能力和作战效能评估方法,分析了各种方法的适用环境。在此基础上,可以根据不同的评估目的,选取不同的评估方法。