电子干扰条件下地空导弹雷达干扰压制区计算方法

介绍了干扰压制区的概念,给出了单机和多机干扰条件下地空导弹雷达干扰压制区的计算方法,并通过仿真示例对干扰压制区的形状和大小进行了比较和分析.这对正确、合理地评估电子干扰条件下地空导弹的作战能力具有重要的意义.     

基于马尔可夫过程的活动目标侦察雷达搜索效率模型研究

根据活动目标侦察雷达的特点和发现目标的环节,用马尔可夫过程对侦察系统的雷达搜索效率进行分析,得出计算模型,给出应用实例.对提高雷达的作战效能有一定意义.     

地空导弹武器系统制导雷达测量误差评估

地空导弹武器系统制导雷达的测量误差直接影响地空导弹武器系统的命中率,研究一种简便的方法对制导雷达的测量误差进行定期评估,对保障地空导弹武器系统的性能具有重要意义。基于无人机和北斗系统(BDS)提出了一种简便高效的制导雷达测量误差评估方法。该方法不需要将制导雷达输送到指定的校飞基地,在原阵地就可方便实现,不影响部队担负战备任务,且评估精度高,为定期掌握地空导弹武器系统制导雷达的测量误差提供了一种有效方法。     

无源干扰对目标搜索雷达侦察效能影响的计算分析

为了提高目标搜索雷达在无源干扰条件下的侦察效能,以干扰箔条为例,在细致分析干扰作用机理的基础上,建立相应指标体系,分别计算了干扰箔条云与箔条压制性干扰对目标搜索雷达侦察效能的影响。研究结果对指导部队训练和进行电子干扰效能评估具有重要意义。     

多重电子干扰下地空导弹杀伤区计算方法

针对复杂电子环境下地空导弹武器系统杀伤区变化问题,探讨了多重电子干扰下地空导弹杀伤区的计算方法.该方法首先计算多重电子干扰下制导雷达作用距离,继而确定出导弹发射时机,然后推导出杀伤区参数.利用EA方法,对多重电子干扰下地空导弹杀伤区的影响灵敏度进行了分析,经算例验证,该方法符合作战实际,对作战具有一定的参考价值.     

便携式地空导弹抗击武装直升机作战效能研究

根据便携式地空导弹和武装直升机的基本性能指标,运用数学解析的方法,对某便携式地空导弹抗击武装直升机的作战效能进行了分析计算,并得出计算结果.从计算结果可以看出,作为抗击武器直升机的武器系统,某型便携式地空导弹具有较高的作战效能.同时,结合计算结果分析了影响作战效能发挥的主要因素,提出了提高便携式地空导弹抗击武装直升机作战效能的对策.     

随机理论雷达探测地面目标模型

雷达对地面目标的搜索效能是直升机对地作战效能评估的基础,建立雷达对地面目标搜索的数学模型,并分析几个因素对发现目标概率的影响,以及提高目标发现概率的方法,进而提高直升机的作战效能.模型有效地提高了雷达探测地面目标效能评估的准确性,对于指挥决策部门和设计单位有一定的参考意义.     

复杂电磁环境下搜索雷达探测概率仿真分析

为了具体分析复杂电磁环境对舰载搜索雷达的影响,针对搜索雷达干扰方式的数学模型,从研究搜索雷达探测概率的角度建立了作战效能模型.以这些数学模型为基础和依据,对海军作战仿真系统中,复杂电磁环境下舰载警戒搜索雷达探测概率进行了多次定量仿真计算,给出了主要数据结果.仿真计算结果与理论值基本吻合,证明仿真计算的结果是可靠的,能够反映复杂电磁环境对搜索雷达探测概率的实际影响.     

俄罗斯“道尔”地空导弹系统

俄罗斯安泰机电研究院向军火市场推出新型的“道尔”(TOR)地空导弹系统,已于1993年开始批量装备部队。它是俄军防空部队近年装备的主战兵器之一。“道尔”系统是世界上同类地空导弹系统中唯一采用三坐标搜索雷达,具有垂直发射和同时攻击两个目标能力的先     

一种轰炸机压制防空导弹的解析模型

轰炸机压制防空导弹是压制敌地面防空的一种重要手段.通过分析轰炸机-防空导弹对抗的特点,根据流守恒原理和排队论模型的近似方法,提出一种轰炸机压制防空导弹的解析模型.该模型描述了轰炸机的数量、飞行速度、轰炸能力,地空导弹搜索雷达探测距离、目标处理速率,及地空导弹射击速率和毁伤能力等因素对作战效能的影响.采用方差分析方法对根据析因试验设计得到的试验结果进行影响因素敏感分析,得到各因素对作战结果影响程度的定量结果.     

An Unlikely Alliance: Portuguese and South African Airpower in Angola, 1968–1974

The war that Portugal was obliged to fight in Africa began in 1961 and immediately stretched the resources of its armed forces. Nowhere was this thinness more apparent than in policing the vast territory of Angola. The east and southeast of Angola were particularly vulnerable, as the area was a vast, sparsely populated region characterised by enormous featureless plains or chanas covered in tall grass and broken by an extensive river system and mountainous forests. The only military solution to policing these immense spaces was aviation and specifically the helicopter that could carry troops into battle, protect them with a gunship and bring them home when the operation was concluded. The immediate problem for the Portuguese Air Force (Força Aérea Portuguesa or FAP) in Angola and elsewhere was a scarcity of helicopters. The solution was an alliance with South Africa, which had a strong inventory of Alouette IIIs, to help in policing the east. This move was likewise in the interest of South Africa, as its threat came from Zambia through south-eastern Angola. This article examines the strategic and tactical development of this unusual, cross-cultural alliance and the symbiotic relationship that resulted in destruction of the enemies of both in Angola.     

Helping hands: civil–military cooperation and Italy's military operation abroad

In the Post-Bipolar Era the growing complexity of the military operations requires a new approach for the resolution of international crises. Since the end of the Cold War, peace support operations (PSO) have become the mainstay and principal occupation of most Western armies. At the same time, Italy has been one of the most important actors in such an area. The article focuses on the cooperation between military and civil components (a process called CIMIC) as a key variable in the Italian PSOs. We will analyse in detail the main lessons learned from past military interventions as well as the general context in which new tendencies are taking place. The maintaining of a minimum security frame becomes essential to fulfil activities ‘collateral’ to the mission: reconstructing services and infrastructure, food distribution, water and medication, law and order, de-mining, training of local forces, and supporting local institutions. These are the main tasks to obtain thrust and support from the population.     

Terrorism,insurgency, kidnapping,and security in Africa's energy sector

Energy continues to serve as the bedrock of modern economies and the main driver of modern society. For Africa, the production and supply of energy resources such as crude oil, natural gas, uranium, coal, biomass, biofuels and other renewables are an important source of employment, rents, taxes, royalties and profits. This sector brings in several tens of billions of dollars of revenue annually. The production and delivery of such resources, however, depend on critical infrastructures such as pipelines, refineries, processing plants, terminals, rigs, electrical energy pylons, substations, pump stations, vessels, and tankers. These infrastructures have been attacked by terrorists, insurgents, vandals and saboteurs, all of whom see them as targets against which to register their grievances and extract concessions from the state. This paper is a chronological account of some of the documented incidents of terrorism, insurgency, kidnapping, destruction, sabotage, and human casualties suffered in the oil and gas sectors in Africa between 1999 and 2012. It is based on data extracted from the databases of the RAND Database of World Terrorism Incidents and the University of Maryland's Global Terrorism Database (GTD).     

国内外结构钢焊条研究的现状与发展

本文主要介绍了国外焊条的现状和发展趋势,包括焊条的高韧性、高效率、低尘低毒和耐吸潮性能,为国内的焊条研究提供了参考依据。     

A Sign of Victory?: ‘Scottish Swords’ and Other Weapons in the Possession of the ‘Auld Innemie’

Many late medieval documents, notably inventories of arms and armour, of Englishmen contain references to ‘Scottish swords’ and other weapons. What did the compilers of these documents mean when they described a weapon as ‘Scottish’? How did such weapons come to be in the possession of these men? This article will attempt to explain this phenomenon drawing on primary documentary sources and surviving material culture from Glasgow Museums’ collections and others, as well as artworks from the period.     

Tacit support for terrorism: The rapprochement between the USSR and Palestinian guerrilla organizations following the 1967 war

This article demonstrates the inconsistent and wavering Soviet attitude towards national liberation movements in general and the Palestinian organizations in particular. Until the late 1960s, the Soviets viewed these organizations with suspicion, hesitating to engage in political dialogue with them. However, in the 1970s, political and military events in the region, as well as modifications in the Kremlin's Cold War strategies, led to a general shift towards the Middle East in Soviet foreign policy. Soviet leaders showed increased willingness to provide certain Palestinian organizations with arms with which to conduct terrorist activities against Israeli, pro-Israeli, Jewish and Western targets. The article explores the complex relations between Palestinian organizations and the USSR in the field of international terror. The study also exposes and analyzes the nature and content of Soviet–Palestinian arms dialogues and transactions. It provides clear evidence that Soviet policymakers and other luminaries were fully informed of, and sometimes directly involved in, these transactions and dialogues at the highest levels.     

A1 Qaeda and the radical Islamic challenge to western strategy

The September 11 global crisis prompted by the attacks on the World Trade Center and the Pentagon raises major questions concerning the nature and trajectory of terrorism in the post-Cold War global order. Hitherto, terrorism has been largely debated by analysts at the level of nation states. Terrorist and insurgent movements have also been largely anchored in nationalist and ethnic power bases even when they have sought to mobilise a transnational ideological appeal on religious or class grounds. There have been a few exceptions to this pattern such as the alliance between the German Baader-Meinhof group and the Japanese Red Army Faction, but even such international alliances as this did not, until at least the 1980s, presage anything like a global terrorist network necessitating a global strategic response. This study examines terrorism and global strategic responses.     

Helping hands: external support for the KNU insurgency in Burma

This article analyses to what extent the Burmese KNU insurgency made use of external support from states, refugees, and diasporas. Based on extensive fieldwork it is concluded that support from neighbouring states and refugees has for years kept the Karen rebellion alive. Western countries perceived forms of resistance to the illegitimate Burmese regime as just and have therefore played a crucial role in the continuation of conflict in Karen State. It is important that policymakers and donors as well as executing organizations continue to reflect critically on the way they exercise their work.     

Cyberpower in Strategic Affairs: Neither Unthinkable nor Blessed

Abstract

This article explores the effect of connectivity on strategic affairs. It argues that the effect on war's character is potentially, although not yet shown in practice, considerably large. Its effect upon the distribution of power among states in the international system is small, contrary to the claims of ‘cyberwar’ alarmists. All told, however, its effect upon strategic affairs is complex. On the one hand, it represents a significant advance in the ‘complexification’ of state strategies, understood in the sense of the production of intended effects. On the other hand, strategists today – still predominantly concerned with the conflicts and confrontations of states and organised military power – are generally missing the power which non-traditional strategic actors, better adapted to the network flows of the information age, are beginning to deploy. These new forms of organization and coercion will challenge the status quo.