火炮自动操瞄使用姿态传感器调炮误差模型分析

火炮使用姿态传感器进行自动操瞄时,操瞄精度受到多种误差因素影响。为了确定影响调炮精度的主要误差源,为误差修正提供理论基础,文中建立了使用姿态传感器进行自动操瞄的误差模型,并对主要误差因素进行了分析和仿真。     

车载炮操瞄精度分析与检验

针对车载炮操瞄过程中的精度问题,重点分析了车载炮刚度、炮耳轴倾斜传感器的测量、炮耳轴与身管轴线不垂直3个方面的因素引起的误差,并给出了基于激光膛轴仪的车载炮操瞄精度检验方法,为车载炮操瞄系统设计提供了参考依据。     

全战仪实现身管武器操瞄精度测试方法

操瞄精度是武器系统的一项重要战技指标,它将直接影响到火炮的射击精度,传统测试方法采用两台数字经纬仪,需要两人同时操作,介绍了一种用一台全战仪一个人完成身管武器操瞄精度检测的方法,其测量误差比被测量小一个数量级,可以满足测量精度要求。该方法切实可行,可用于身管武器的调炮精度测量。     

反辐射导弹识别与告警系统设计

为了提升某型炮瞄雷达识别反辐射导弹的能力,设计了一种面向炮瞄雷达的反辐射导弹识别与告警系统。系统由雷达信号采集终端和信号处理平台两部分构成。信号采集终端在雷达同步脉冲的同步下,负责采集I路视频信号并传送至信号处理平台,信号处理平台在频域实时处理I路视频信号,判断是否存在反辐射导弹,并发出报警提示。经试验验证,该系统可以识别出高速反辐射导弹。     

基于CAN总线的装甲车辆电源系统在线检测设计

提出了一种装甲车辆故障在线检测方案,采用C8051F040单片机作为控制单元,通过相应的接口电路对装甲车辆电源系统的各路信号进行实时采集,并将结果通过CAN总线传入上位机,与其它检测子系统构成装甲车辆在线故障检测系统.     

压电速率陀螺瞄稳系统工程实践中若干问题分析与探讨

在简述压电速率陀螺瞄稳系统原理和模型的基础上,对前馈稳定、瞄准线旋转、陀螺零位、载体振动等进行了分析,给出零位补偿措施和噪声抑制对策。并探讨了稳定系统速度和加速度的限制问题     

某型高炮火控系统并行通信信号检测模块设计

针对某型自行高炮火控系统在线性能测试的需求,设计了一种火控系统并行通信信号在线检测模块。该测试模块将待测装备信号引入模块输入端,根据并行通信信号的时序实现分时多点数据采集,并传输到主控计算机进行数据的分析与处理。对监测节点的设置进行了分析与选择,设计了监测系统结构与测试接口。测试结果表明,该测试模块能够实现对稳定跟踪系统、火控计算机系统和火炮随动系统等火控系统主要单体之间并行通信信号的在线测试和分析,及时发现系统异常。     

车载观瞄仪器通用综合测试系统设计

观瞄仪器是坦克火力控制系统的重要组成部分,观瞄仪器的原位检测是坦克火控系统的维修保障的重要环节。本设计以Lab Windows/CVI虚拟仪器为开发工具,高度集成各种测量和控制硬件实现了坦克观瞄仪器原位的检测系统。     

基于SOPC的多路并行同步数字信号采集系统设计

针对某型导弹武器装备在线检测系统的需求,以软、硬件可配置的SOPC（System on a Programmable Chip）嵌入式系统为平台,以较少的硬件资源消耗为前提,应用FIFO缓存和直接存储器传输（Direct Memory Access,DMA）技术,设计数据采集系统,实现对20路并行同步数字信号的快速采集,并利用现代DSP技术对采集的信号进行滤波处理,通过USB总线将处理后的信号送到工控机,基于LabVIEW软件在工控机上实现系统的在线检测功能。     

被测雷达天线旋转速度的确定

雷达天线连续旋转时,用幅度法测量的是动态方向图。为使其逼近静态方向图的程度能满足要求,天线旋转的速度不应超过ω_(max)。此时,绝大部分方向图谱功率落入整个接收通道的综合带宽B_W之内。根据瞄-5和瞄-10雷达的实际方向图,本文计算出了各个波段被测天线应具有的最大旋转速度。     

Putin – the masked nemesis of the strategy of ambiguity

Recent events demonstrate the complex and adaptive approach employed by Russia to reassert influence in Europe. The changing face of Russia’s strategy commenced in 2007 when it launched a crippling cyber-attack against Estonia. This was followed by a large Russian conventional attack against Georgia in 2008, occupying two large areas of the nation. 2014 witnessed the Russian annexation of Crimea where in just a week, Russia seized control of Crimea “without firing a shot.” The annexation of Crimea was rapidly followed by a Russian inspired and led subversive war in eastern Ukraine. The common thread among these diverse Russian operations is its use of ambiguity to confound and confuse decision makers in the West.     

India's counter-insurgency experience: the ‘trust and nurture’ strategy

The Indian Army, a force trained primarily for conventional warfare, has been engaged in internal counter-insurgency operations since the 1950s. Despite such a long innings on a counter-insurgency mode, little attention has been accorded within military circles to doctrinal innovation for waging sub-conventional warfare in India's democratic political context. At best, the Army continues to view counter-insurgency duty as secondary to its primary duty of defending India from external conventional threats. By conceptualizing a counter-insurgency strategy of ‘trust and nurture’, this article aims to fill this critical doctrinal gap in India's military policy. The author argues that a counter-insurgency strategy of ‘trust and nurture’ based on democratic political culture, measured military methods, special counter-insurgency forces, local social and cultural awareness and an integrative nation-building approach will result in positive handling of India's internal security problems. The author utilizes India's counter-insurgency experiences in Assam, Mizoram, Nagaland, Punjab, and Operation ‘Sadhbhavana’ in Jammu and Kashmir as illustrative empirical indicants in order to validate the ‘trust and nurture’ strategy.     

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.