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1.
测试总线的发展与展望   总被引:1,自引:0,他引:1  
测试总线是自动测试系统中控制器与仪器模块之间、仪器模块与仪器模块之间、系统与系统之间的信息通道,在自动测试系统中占据重要地位。随着测试总线技术的不断发展,先后出现了GPIB,VXI,PXI,PXIe,LXI和AXIe等测试总线标准。对测试总线的发展历程进行了回顾,对六种测试总线的特点和应用进行了总结,并比较了不同测试总线的性能,重点对测试总线的未来发展方向进行了分析与展望。  相似文献   

2.
针对传统CAN总线无法满足车电系统进一步发展对总线实时性和确定性要求的难题,引入具有时间触发机制的TTCAN (Time-Triggered Controller Area Network)网络,给出了一种车电系统TTCAN网络调度算法.在此基础上,构建了一种新的车电系统TTCAN网络调度设计方案,并以消息的最差响应时间、最大发送周期抖动和总线带宽利用率为性能指标分析了该方案的性能,分析表明:该方案具有良好的实时性、确定性和高的总线带宽利用率.  相似文献   

3.
Link-16作为当前典型的数据链,具有良好的抗电子干扰能力,对其进行有效干扰是目前军事通信领域研究的重点之一。首先概述了典型数据链的通信体制和抗干扰措施,并参考网络OSI模型和GIG模型,建立了数据链的TDLRM结构模型;然后在此基础上将智能干扰的手段划分为物理层干扰、链路层干扰和跨层干扰;最后对在物理层上的多频点阻塞式干扰和相位干扰、在链路层上的协议攻击以及跨层干扰进行了技术分析。  相似文献   

4.
软件总线为复杂软件系统的构件组织和管理提供了平台.为规范软件总线体系结构开发,建立了软件总线结构模型,并对其通讯、构件管理、任务调度、接口控制等功能实现进行了研究,提出了软件总线框架结构及其基于软件总线的软件系统开发流程和方法.  相似文献   

5.
针对运用解析法对战车电子系统总线进行建模和分析困难这一问题,运用CPN Tools工具构建了基于有色Petri网的综合电子系统总线模型,建立了总线性能仿真平台,对某型战车总线性能进行了分析。结果验证了基于CPN的战车综合电子系统总线建模的正确性与可行性。  相似文献   

6.
为识别链路层加密比特流,以未加密与加密数据在随机统计特性上的差异为依据,对4种典型的随机性检测方法在比特流长度不同时的识别率进行了比较研究.针对块内最长游程检测过程中出现的比特流尾部比特位不能构成完整子块的问题,提出了2种可行的处理方案.通过对块内最长游程检测门限值函数的研究,基于参数优化的方法改进了块内最长游程的检测方案,在一定程度上提高了识别率.最后,以某无线网络链路层加密比特流为识别对象,对提出方案的有效性进行了验证.  相似文献   

7.
1553B 总线仿真系统总线控制软件设计   总被引:2,自引:0,他引:2  
就仿真系统对1553B单层总线系统和层次总线系统的总线控制软件设计进行了研究,给出了提高系统效率的方案和优化1553B总线数据流的方法。  相似文献   

8.
对Multibus总线和ISA总线接口转换的设计进行了综述,提出了一种采用PLD实现总线接口转换的设计方案,在Multibus总线上实现对ISA总线接口器件的访问.  相似文献   

9.
Mulitbus总线到ISA总线的接口设计   总被引:1,自引:0,他引:1  
对Multibus总线和ISA总线接口转换的设计进行了综述,提出了一种采用PLD实现总线接口转换的设计方案,在Multibus总线上实现对ISA总线接口器件的访问.  相似文献   

10.
针对军事电子信息系统对网络安全性和可靠性的要求,提出了一种具有双总线结构的互联系统。通过对外总线子系统中串行通信的研究,为外总线子系统中通信的实现提供了有力的保证。  相似文献   

11.
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.  相似文献   

12.
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.  相似文献   

13.
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.  相似文献   

14.
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).  相似文献   

15.
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.  相似文献   

16.
17.
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.  相似文献   

18.
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.  相似文献   

19.
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。  相似文献   

20.
Reviews     
Douglas S. Derrer, We Are All the Target: A Handbook of Terrorism Avoidance and Hostage Survival. Annapolis, MD: US Naval Institute Press, 1992. Pp. x+135, notes, index. $14.95. ISBN 01–55750–150–5

Ian Knight, Zulu: Isandlwana and Rorke's Drift, 22–23 January 1879. London: Windrow & Greene, 1992. Pp.136, 150 illus., incl 8 colour plates, maps, biblio. £35. ISBN 1–872004–23–7

Ian Knight, By the Orders of the Great White Queen: Campaigning in Zululand through the Eyes of the British Soldiers, 1879. London: Greenhill Books and Novato: Presidio Press, 1992. Pp. 272, 17 illus., 1 map. £18.95. ISBN 1–85367–122–3

Manfried Rauchensteiner and Erwin A. Schmidl (eds.), Formen des Krieges: vom Mittelalter zum ‘Low‐intensity’ Conflict’. Graz : Verlag Styria, 1991. Pp.208. DM35. ISBN 3–22–12139–7

Harold J. Kearsley, Maritime Power and the Twenty‐First Century. Dartmouth: Dartmouth Publishing Company, Limited, 1992. Pp.xv + 203, 13 diagrams, index. £32.50. ISBN 1–85521–288–9  相似文献   

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