Landmines and Conservation in Southern Africa: Peace Parks in the Aftermath of Armed Conflict

Peace parks are a modern means of conflict resolution through nature conservation. The Great Limpopo Peace Park (GLPP), which spans South Africa, Zimbabwe and Mozambique, was established to bring new hope to an area that is infamous for racial and political divisions, civil war and widespread poverty. This paper discusses the impact of international laws governing landmines, the current priority choices of the countries involved, and the situation in the two mine-affected countries: Mozambique and Zimbabwe. Minefields and politics are interrelated, and have an impact at local, national and international level. Using the GLPP as a case study, the article argues that although they have been presented as excellent examples of integrated biodiversity conservation and socio-economic development in developing countries, peace parks will not fulfil their main objective of promoting an image of peace in the aftermath of conflict without addressing landmine contamination.     

进入角约束下的载机变结构远距引导

针对一般导引律在载机远距引导中存在的问题,结合远距引导的需求,设计了远距引导的三维变结构导引律。该导引律具有较强自适应性,可以使载机以期望的进入角接近目标。仿真结果表明,载机在该导引律作用下,能以较小过载,平滑轨迹快速接近机动目标,并保证载机引导结束时占有有利的空中战术态势。     

多约束强化学习最优智能滑翔制导方法

为提升复杂飞行任务下滑翔制导的自主性,提出一种基于最优制导与强化学习的多约束智能滑翔制导策略。引入三维最优制导以满足终端经纬度、高度以及速度倾角约束。提出基于侧向正弦机动的速度控制策略,研究考虑机动飞行的终端速度解析预测方法。针对速度控制中机动幅值无法离线确定的问题,研究基于强化学习的智能调参方法。该方法基于终端速度设计状态空间,以机动幅值设计动作空间,设计综合终端速度误差与滑翔制导任务的回报函数,采用Q-Learning实现机动幅值的智能调整。仿真结果表明,智能滑翔制导方法能够高精度满足终端多种约束,并能有效提升复杂任务下的自主决策能力。     

一种判别离散型随机变量相互独立的新方法

对两个离散型随机变量相互独立的问题,通过引入分布律矩阵的概念,借助矩阵理论中行向量的相关结论,提出一种新的判别独立的方法。与以往的方法相比,这种方法更为简单和实用,更重要的是具体操作过程中计算量大为减少。     

激光驾束制导信息场仿真系统设计

为满足激光驾束制导信息场检测和标校检测设备的需要,设计了激光驾束制导信息场仿真系统。采用在仿真制导导弹飞行曲线取样的方法,利用FPGA、激光器及其驱动电路产生仿真信息场。试验结果表明：仿真系统信号输出稳定、精度高,可以满足激光驾束制导信息场检测标校的要求。     

The quay crane scheduling problem with time windows

The quay crane scheduling problem consists of scheduling tasks for loading and unloading containers on cranes that are assigned to a vessel for its service. This article introduces a new approach for quay crane scheduling, where the availability of cranes at a vessel is restricted to certain time windows. The problem is of practical relevance, because container terminal operators frequently redeploy cranes among vessels to speed up the service of high‐priority vessels while serving low‐priority vessels casually. This article provides a mathematical formulation of the problem and a tree‐search‐based heuristic solution method. A computational investigation on a large set of test instances is used to evaluate the performance of the heuristic and to identify the impact of differently structured crane time windows on the achievable vessel handling time. © 2011 Wiley Periodicals, Inc. Naval Research Logistics, 2011     

中远程空空反辐射导弹的战术问题

提出了一种用普通战机挂载中远程空空反辐射导弹,对抗雷达探测距离占有绝对优势的先进飞机或隐身飞机的新战法,并计算最大发射距离.该战法是在被敌方机载雷达截获并面临导弹威胁的情况下,主动发射空空反辐射导弹攻击目标辐射源,然后进行置尾机动,破坏来袭导弹的中制导,使它脱靶,达到消除来袭导弹的威胁和攻击对方的双重效果.     

对剩余飞行时间估计误差不敏感的末制导改进方法

首先对传统的比例导引控制系统进行了分析,分析结果表明,传统的比例导引方法对导弹剩余飞行时间的估计依赖性强,剩余飞行时间估计误差将大大降低制导性能,甚至造成导弹脱靶.为了解决这一问题,提出了一种降低敏感度制导律,建立了该改进制导律的数学模型并进行了仿真,仿真结果表明,该制导律对剩余飞行时间误差敏感度低,并能够提高制导性能...     

高炮防空作战指挥系统导引能力分析

在防空作战指挥系统中,用目标指示雷达引导目标坐标测定仪捕捉目标,能够显著缩短系统反应时间、增大捕获概率、提高作战效能.分析和推导了防空作战指挥系统导引成功率的解析表达式,并对系统导引成功率进行了计算分析,给出了计算结果,对研究和设计防空作战指挥的导引系统具有一定的参考价值.     

潜射线导鱼雷作战使用攻击决策

针对线导鱼雷制导方式的特殊性,从潜艇鱼雷攻击的决策依据入手,结合线导鱼雷作战使用的要求,提出了实现线导鱼雷攻击决策功能的必要条件.并以此为依据,阐述了线导鱼雷在作战使用过程中应把握的问题.