舰船作战系统一体化建模仿真环境研究

分析了舰船作战系统仿真的现状和一体化建模仿真环境的特点,讨论了一体化建模仿真环境应具备的功能：模型管理、模型验证、仿真管理、仿真生成、数据管理、数据分析、文档生成、资源共享和协同管理,给出了一体化建模仿真环境的体系结构、运行模式和工作流程,最后提出了仿真应用程序代码自动生成技术的解决方案。     

基于Multi-Agent技术的动态电磁环境建模与仿真

针对传统的电磁环境建模方法难以准确地描述电磁环境动态变化的问题,提出了一种基于Multi-Agent技术的动态电磁环境建模方法。首先分析了电磁环境建模的层次结构;然后建立了通信电台、雷达、侦察站、干扰站的Agent实体模型,建立了Agent行动模型和Multi-Agent系统交互模型,解决了个体Agent模型设计中的感知、动作、决策及实现方法上的问题。最后设置某仿真场景,利用Netlogo仿真平台建立仿真验证系统,仿真结果验证了模型的有效性,表明了应用Multi-Agent建模方法解决电磁环境的动态模拟的可行性。     

基于Hough变换的叶簇环境下SAR/GMTI动目标检测算法

叶簇环境下,当动杂波比较复杂时,常规的目标检测算法CFAR和DPCA不能有效地滤除杂波。提出了一种基于Hough变换的叶簇环境下SAR/GMTI动目标检测算法(HD),该算法在叶簇杂波比较复杂的情况下能够有效滤除动杂波,提取出动目标。首先,介绍了叶簇扰动环境下的场景建模,并且给出了建模分析和建模场景仿真;其次,给出了HD算法推导过程;最后,在建模基础上对该算法和常规算法进行了对比仿真实验。实验结果表明,该算法在较低信噪比情况下也能保持较高的检测概率。     

舰潜对抗仿真中潜艇CGF建模

准确有效地对潜艇CGF进行建模是保证舰潜对抗仿真中潜艇兵力物理真实性和行为智能性的基础。在潜艇CGF模型通用框架基础上,对潜艇CGF物理建模和行为建模进行了分析和研究,提出在基于Petri网的潜艇CGF行为模型中引入战术规则前置谓词公式的行为建模方法,提高了准确描述符合战场行为规律的潜艇CGF的能力。在STAGE仿真环境上的验证结果表明:该方法合理、有效。     

战场电磁环境的定量描述与模拟构建及复杂性评估

探讨了战场电磁环境定量描述与可视化表达、战场电磁环境模拟构建的内容,提出了军用有意电磁辐射和战场背景电磁辐射模拟仿真的建模方法。在战场电磁环境复杂性定量分析方面,将战场电磁环境的复杂性分为一般复杂性和特定复杂性,给出了相应的评估指标和评估方法。     

赛博空间作战及其对战争仿真建模的影响

赛博空间作战对未来战争及战争仿真建模产生着深远、巨大的影响。针对在赛博空间和赛博空间作战基本认识上存在的争议,探讨了赛博空间的复合性、整体性等特点,以及赛博空间作战的战略威慑性、体系对抗性等特点。以战争仿真建模为视角,在研究赛博空间作战对未来战争及战争仿真建模突出影响的基础上,提出了赛博空间作战影响下战争仿真建模需关注战争复杂信息环境、大尺度战争体系、复杂自适应行为、战争体系脆弱性和赛博战争舆情信息传播仿真建模问题。     

协同仿真环境的设计与实现

本文从计算机技术和仿真技术的发展和应用需求出发，提出了协同仿真的基本概念和关键技术，包括建模方法、仿真算法、仿真数据库等几个方面。讨论了协同仿真环境的一般体系结构，最后，介绍了一种协同仿真环境的设计和实现方法。     

复杂电磁环境下作战仿真系统指挥控制体系建模

复杂电磁环境是信息化战争的重要特征,指挥控制体系是作战体系的"中枢".提出基于信息衍化的复杂电磁环境下作战仿真系统指挥控制体系的建模方法,研究了复杂电磁环境下作战仿真系统的模型体系分析了指挥控制体系的关系,建立了初步的指挥控制体质模型.为复杂电磁环境下作战体系建模与仿真打下一定的理论与模型基础.     

新型作战空间建模仿真实践与体会

新型作战空间建模是战争复杂系统仿真领域的一个大课题。由于新型作战空间是一个正不断发展着的新生事物,对其认识还没有完全统一。针对新型作战空间,传统建模方法无法体现信息网络和体系对抗特征、无法描述信息域和认知域的作战机理、无法刻画其对体系作战能力的核心作用,迫切需要突破新的建模理论和方法。通过在网电空间、太空域和社会域等新型作战空间的建模仿真探索,提出新型作战空间建模仿真应该更多地关注网络化的空间环境建模、信息域实体与行为建模以及体系化的战争综合效果建模等问题。     

综合环境建模及其数据表示与交换

环境的标准化不仅是实现环境数据表示、重用、交换的关键,也是实现高度互操作性的核心。本文首先介绍了DIS中的自然环境,然后提出了综合环境的概念,指出了它的内容、特点及其在仿真系统中的重要作用,重点分析了综合环境的建模、数据表示与交换。接着,介绍了SIF和SEDRIS标准,并重点对SEDRlS的数据模型和API进行了阐述和分析。     

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     

Panjwai: a tale of two COINs in Afghanistan

The US Army has two approaches to counterinsurgency operations in Afghanistan. One is hard, or combat-focused, and the other is soft, or development-focused. This study examines two US Army task forces deployed to Panjwai District, Afghanistan from 2012 to 2013. CTF 4-9 and 1-38 offer a meaningful comparison because they pursued these contrasting approaches among the same population and against the same enemy at the same time and place. The study compares each unit’s approach and finds that neither approach was successful absent the other. The article concludes by recommending further research into combining the approaches at the operational level.     

线性核时频信号表示及其仿真

根据ｃｈｉｒｐ信号在模糊域的特点,本文提出了线性核时频表示方法。这种方法在提高分辨率、消除交叉项以及抑制噪声等方面都具有较高的性能。理论分析和实验结果都证实了这种方法的有效性     

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.     

Forecasting a Hurricane: Israeli and American Estimations of the Khomeini Revolution

The surprising ‘Arab Spring’ raises the question as to what would enable national intelligence to provide high quality warnings prior to the eruption of popular revolutions. This article uses new sources of evidence to trace and explain Israel's success in comparison to US failure at correctly estimating the course of the Iranian Revolution in 1977–79. In explaining this variance, the article shows that it was mainly the result of the intimate acquaintance of Israel's representatives in Iran with the local language, history and culture, as well as the ability to communicate with locals – tools which the Americans completely lacked.     

关于教师继续教育培训模式的思考

继续教育作为终身教育的重要组成部分和基本形式,对教师的发展成长意义重大。继续教育工作开展十多年来,取得了一定的成绩,但还存在不少问题,如学习动机较为被动,管理认识不到位,教学内容陈旧空泛,教学方法呆板机械等。随着课程改革的不断深入,继续教育必须采取相应的改进措施,树立以人为本,服务至上的观点,教学内容的前瞻性与实用性并重,教学人员进行整合,教学方法灵活多样,评价考核规范科学等,以此激活受训教师内在的学习动机,更大程度地提高继续教育培训的实际效果。     

用DirectShow实现网络视频

目前市场上的网络监控技术一般用昂贵的硬件设备来支撑,投资较大。在深入研究微软的DirectX9.0的基础上,提出如何用DirectShow软件技术和普通的数字摄像头来实现网络视频的监控和实现技术,内容涉及通信协议、视频的编码与解码技术、视频的编码格式和COM组件编程技术等,最终的实验结果令人满意,且费用低廉,技术可靠,为在高速局域网内构建视频监控系统提供有效的技术支持。     

Interpreting the Ribchester Helmet

In 1796 a 13-year-old boy playing on wasteland behind his father’s house in Ribchester, Lancashire discovered an assemblage of over 30 Roman artefacts, including a decorated brass helmet. Although partially corroded the Ribchester helmet is a fine example of a first-century AD cavalry sports helmet. This article considers how the interpretation of the helmet has evolved since its discovery. The multi-faceted iconography of the helmet with its mural crown diadem is that of an elite soldier and is paralleled in other examples of cavalry sports helmets of the Ribchester type. The long-neglected imagery on the helmet bowl is reinterpreted and seen not as a haphazard collection of randomly placed combatants but as a highly structured, symmetrical composition specifically designed to be viewed from different directions.     

Desert insurgency: lessons from the third Tuareg rebellion

This article provides an in-depth examination and analysis of the 2006–2009 Tuareg rebellion in Mali and Niger. It identifies the underlying reasons behind the rebellion, explores contrasting counter-insurgency (COIN) strategies employed by the two governments, and presents some lessons learned. While both COIN approaches ultimately produced similar peace settlements, the article argues that the Malian strategy of reconciliation combined with the selective use of force was far more effective than the Nigerien iron fist approach at limiting the size and scope of the insurgency and producing a more sustainable peace. It concludes by looking at the role of external actors, particularly the United States, and how the failure to internationalize the conflict was actually more beneficial to the local COIN effort, as well as to the longer strategic interests of the United States in the region.