单片机控制的指挥仪航路产生系统

本文首先介绍单片机控制的指挥仪航路产生系统的原理及组成,重点讨论了目标现在点坐标由数字量到指挥仪所需要的模拟信号的转换方法,最后对该系统的误差结果进行了分析。     

HLA仿真中利用Stage实现控制和演示方法

高层体系结构HLA(HighLevelArchitecture)是美国国防部为保证各种仿真应用之间的互操作性而建立的一个通用仿真技术框架核心,现已作为IEEE1516标准广泛应用于各种分布式仿真。在实现基于HLA的C4ISR体系结构仿真中,提出了一种利用Stage控制和演示仿真过程的方法,并解决了其中RTI时钟和Stage时钟的不同步问题,有效地完成了仿真过程的直观演示和控制。     

油料保障力评估方案中的兼容度运用研究

旨在寻求一种从众多备选油料保障力评估方案中产生优化方案的方法,引入 兼容度的概念,并建立了兼容度极大化模型,根据模型建立了油料保障力评估方案优化系 统。利用优化系统对6个部队的油料保障力评估过程中的4个评估方案进行优化,通过计 算、比较、择优,得到了最优评估方案。应用表明运用兼容度优化油料保障力评估方案是合 理和正确的。     

舰舰导弹武器系统作战效能评估

在规定舰舰导弹典型作战任务剖面的情况下,运用美国工业武器系统效能咨询委员会评估武器系统效能的方法,建立舰舰导弹武器系统作战效能评估数学模型,并进行了算例验证和分析。结果表明:该模型可有效评估舰舰导弹武器系统作战效能,为舰舰导弹武器系统作战效能的评估提供了有效且便于操作的方法。     

U-D分解单步迭代滤波在飞行状态估计中的应用

针对单步迭代滤波常规算法数值鲁棒性差、滤波易于发散的缺点对误差协方差矩阵使用了 U - D分解 ,从而形成了一种基于 U - D分解的单步迭代滤波算法。该算法提高了数值鲁棒性 ,并且对相关的量测噪声有一定处理能力 ,应用于飞行状态的估计问题 ,获得了较为满意的结果     

A note on combined job selection and sequencing problems

We investigate the solvability of two single‐machine scheduling problems when the objective is to identify among all job subsets with cardinality k,1≤k≤n, the one that has the minimum objective function value. For the single‐machine minimum maximum lateness problem, we conclude that the problem is solvable in O(n²) time using the proposed REMOVE algorithm. This algorithm can also be used as an alternative to Moore's algorithm to solve the minimum number of tardy jobs problem by actually solving the hierarchical problem in which the objective is to minimize the maximum lateness subject to the minimum number of tardy jobs. We then show that the REMOVE algorithm cannot be used to solve the general case of the single‐machine total‐weighted completion time problem; we derive sufficient conditions among the job parameters so that the total weighted completion time problem becomes solvable in O(n²) time. © 2013 Wiley Periodicals, Inc. Naval Research Logistics 60: 449–453, 2013     

The defence firm of the future

This paper offers the personal view of a senior executive in the Defence Procurement Agency about the future requirements of the defence industry’s principal UK customer. The focus here is on trying to identify the type of corporate behaviour and range of skill sets that the UK Government will need from defence suppliers, both primes and supply chain companies in the future. The concluding message from this ‘Customer View’ is that there is likely to be a continuing market for the company that specializes in delivering defence capability. It will be a company that will be looking for a long‐term relationship, with a specialist knowledge of its various national customers and a willingness to work openly and closely with them. It will be agile in its ability to bring together diverse technologies, to package them as a system and to deliver them either as hardware or as a service. Such suppliers will also need to innovate and to adapt at least as rapidly as the threats that they seek to counter.     

A PANEL DATA ANALYSIS OF THE NEXUS BETWEEN DEFENCE SPENDING AND GROWTH IN THE EUROPEAN UNION: A COMMENT

Abstract

This paper explains and assesses the UK experience with determining prices and profitability for non-competitive defence contracts. Three periods are considered, namely pre-1968, the 1968 Profit Formula Agreement and the changes introduced in 2014. Two cases of ‘excessive’ profits were major determinants of the 1968 Profit Formula Agreement; but continued dissatisfaction with the 1968 Agreement led to changes in 2014. The historical overview of UK experience provides a basis for understanding current UK policy and offers insights for other countries facing similar policy challenges. A critique is presented of UK policy on single source pricing and profitability.     

关于曹操“唯才是举”人才观的辨正

曹操“唯才是举”人才观一直被后世争论,但是,诸多争论都没有触及对这一人才观的本意。其实,曹操“唯才是举”的本意就是企图垄断人才,反对士族垄断官场,否定旧的道德观。曹操的人才观,既是当时的现实需要,又为推动封建社会选择人才制度的进步作出了贡献。     

基于CPLD与单片机的多路高精度数据采集系统设计

结合CPLD与单片机设计了一种多路高精度数据采集系统,最高可达24位转换精度。所采集数据具备良好的实时性,可采集通道数目多,同时系统具备较强的抗外界干扰能力,结构简单,可靠性好。该系统具有较强的可移植性,能够广泛应用于多路、高精度、低频数据采集的场合。