多功能电子战系统作战效能仿真技术研究

多功能电子战系统以电子战功能为主,集电子战、雷达于一体,可以满足侦察预警、定位识别、电子情报、电子进攻、主／被动探测、协同作战、隐蔽作战等作战要求。多功能电子战系统的作战能力是通过对其作战效能的评估得以体现的。文章从仿真结构设计和视景仿真技术等方面介绍了电子战系统仿真技术,并在研究武器系统效能评估方法的基础上,重点介绍了常用的作战效能评估方法。     

舰载电子战软武器系统反导作战效能分析

舰载电子战软武器系统反导作战已成为现代海战中舰艇防御作战的主要方式之一.从分析舰载电子战软武器系统入手,研究了舰载电子战软武器系统防空反导效能评估问题,采用SEA方法建立了舰载电子战软武器系统反导作战效能评估模型,通过某型舰艇电子战软武器系统抗击反舰导弹作战想定,对模型进行了仿真,给出了仿真结果,验证了模型的有效性,为舰载电子战软武器系统作战效能研究提供了一定的借鉴.     

基于云理论的航空兵电子战作战能力评估

通过对航空兵电子战飞机在造成目标信息损失的实际能力与航空兵战术运用上的分析,建立了其电子战作战能力指标体系,既符合电子战原理同时又体现了航空兵作战特点;通过运用云重心理论,将定性与定量相结合,建立了航空兵电子战作战能力评估模型,并给出了具体算例和步骤。     

洛克希德公司开发新一代电子战系统

据《国际海军》１９９８年２月号报道，美国海军已选定洛克希德马丁公司为其研制新一代ＡＮ／ＳＬＹ－２（Ｖ）型先进的综合电子战系统。这种新一代综合电子战系统是美国海军现役ＡＮ／ＳＬＱ－３２（Ａ）电子战系统的后继型号，具有远程战区态势评估能力、分层干扰能力、威胁目标预警能力，信息采集能力、目标对抗能力、反导能力、电子支援能力和对抗监测能力。它将和舰载作战系统相配用，从而大大提高舰艇在沿海作战环境中的生存能力。系统的主要功能可分为三部分：电子支援部分（确保远程预警和精确着角并提高敌友区别能力）；控制和处理…     

基于动态贝叶斯网络的电子战效果评估

依据电子战实际作战环境,以可代表性和可观测性为标准,选取电子战效果评估指标;提出基于动态贝叶斯网络的电子战效果评估模型,对若干可观测的目标特征参数进行综合推理;推导了动态贝叶斯网络的推理算法;分析结果表明,动态贝叶斯网络能够综合目标不同的毁伤效果信息进行较为合理的评估;与静态贝叶斯网络相比,动态贝叶斯网络无论在准确性上,还是在滤波平滑能力上都要优于静态贝叶斯网络,可以为指挥员提供有利可靠的决策支持.     

基于FAHP法的舰艇防空作战中电子战效能评估

舰艇防空作战中电子战的作战效能是衡量防空作战能力的基本依据。为定量评估防空作战中电子战的作战效能,建立了评估防空作战中电子战作战效能的指标体系,并对其进行了分析。首先采用层次分析法确定各因素的权重,然后运用模糊理论对防空作战中电子战效能进行综合评价,用于对防空作战中电子战作战效能进行排序及优化,为指挥员的决策提供一定的量化分析和决策依据。     

美国海军EA-18G舰载机PALS海上试验分析

为了加强海军电子战能力,美海军研发了EA-18G以替代老旧的EA-6B电子战飞机。为实现EA-18G能够在航母上顺利部署,需对其进行相应的试验测试和评估。综合分析了EA-18G电子战飞机在陆上和海上的试验评估环境、试验风险,以及试验需要人员、物资等因素,制定了相应的试验方法和试验评估内容,并归纳总结了海上试验需重点关注的问题。     

美海军水面舰艇电子战系统改进项目分析

水面舰艇电子战系统改进项目是美海军对作战舰艇上的舰载AN／SLQ-32（V）电子战系统进行螺旋式开发升级和替代的项目。通过分析水面舰艇电子战系统面临的新威胁,以及改进项目四个具体阶段采用的技术,得出改进后美海军水面舰艇电子战系统应对威胁的新能力。     

美国舰载电子战系统的发展

介绍美国舰载电子战系统的发展历程以及装备的研制、改进情况,指出在现代战争中发展舰载电子战系统的优势和重要性,探讨几种电子战装备的性能及其特点,论述美国舰电子战系统的发展分析.     

模糊AHP法及其在电子战系统效能评估中的应用

电子战系统的效能评估是基于系统单项效能评估的基础之上的。本文的分析方法是在分析单项效能指标的基础上,应用模糊层次分析法（FAHP）对多个电子战系统进行综合评估。首先构造区间数判断矩阵,然后运用区间数特征向量法（IEM）求取权重向量,最后求出层次的组合区间权及排序指数,得出最佳方案。     

The U.S.S.R.: Ocean Use and Ocean Law

This paper is an attempt to illustrate the stance of the Soviet Union in the law of the sea debate in the light of Soviet ocean activities. The paper has two sections. First, it examines the range of Soviet ocean activities. The considerable extent of Soviet ocean use underscores the importance which the Soviet Union places on the law of the sea debate and its consequent active participation in the process of international negotiation. Second, the paper considers the published record of the Soviet Union in the United Nations seabed debate. In seven years of debate the United Nations General Assembly and the Ad Hoc and permanent Seabed Commities and sub-Commities have generated a considerable body of documantation reflecting the public policy of over one hundred States concerning the law of the sea. Soviet expressions of opinion alone cover more than five hundred pages of documentation. Specific Soviet positions can be considered within two ganeral preferences: the protection of traditional freedoms of the high seas and opposition to ocean control by either coastal States or by an independent international ocean authority. The paper shows how these preferences and the specific Soviet negotiating positions defend and promote the maritime interests of the Soviet Union.     

U.S. ports: evolution and structure

U.S. ports are facing competitive pressures similar to those being felt by ports elsewhere around the world. Despite the public enterprise nature of U.S. port authorities, they tend to function as 'business-like' organizations. This enterprise-like approach stems from their evolution from being primarily private railroad ports in the 19th century to public competitive port authorities in the 20th century. This paper provides an overview of the evolution of U.S. ports and the ongoing effect of earlier legislation, the varied resulting institutional structures, and current national and regional level issues. Although there is no national ports plan or strategy in the U.S.A. (the Constitution limits federal actions in the ports field) the federal government is involved in providing dredging services through the Army Corps of Engineers, navigation aids via the Coast Guard and other minor port-related services. U.S. ports typically come under the jurisdiction of state or local governments. Increasing competition coupled with other port issues (growing financial constraints, difficulties in obtaining dredging permits, environmental concerns and restricted landside access) is forcing some U.S. ports to enter into strategic alliances with others at a regional level.     

Panama Canal expansion and its impact on East and Gulf coast ports of U.S.A.

ABSTRACT

This paper focuses on the Panama Canal expansion and its impact on American port infrastructure for the attention of academic researchers in maritime transportation and supply chain management (SCM). First, it provides a comprehensive background based on a review of pertinent practitioner as well as academic publications. This is followed by a summarization of the impact of this expansion on the infrastructure of the major East and Gulf Coast (EGC) ports, since these stand to be the most affected. Then it presents a categorization scheme for these EGC ports that capture their likelihood of attracting the expected increase in cargo traffic engendered by the expansion; this is preliminarily supported by the latest data on growth in container traffic. The policy implications of this categorization are then discussed and the paper ends by identifying key SCM research problems exposed by the above.     

美国及中国军用无人机的新发展与性能分析

文章介绍了美国军用无人机的一些新发展以及中国军用无人机的发展情况,并对各自发展的方向和趋势作了简要概括。通过对中美几种军用无人机性能参数的对比和分析,指出了中国军用无人机的差距。     

美国卫星系统面临的问题及其对策

美国是目前拥有在轨卫星最多的国家，在充分利用卫星价值的同时，美国十分重视对卫星系统的防护。分析了美国卫星系统面临的三个问题，即：空间武器的威胁、空间武器以外的威胁和GPS星座的损失，并结合相关资料总结了美国的对策。     

U.S. public transit earnings, employment and privatization

This paper uses individual worker and municipal information to examine privatization's influence on public transit workers' earnings and employment. OLS findings on labor earnings reveal that privatization is associated with an erosion of the public transit union premium. These labor earning findings do not change when correcting for privatization heterogeneity, as unobserved worker characteristics do not differ with differing levels of municipal privatization of public transit services. The employment findings reveal that union public transit workers are more likely to be employed in the public sector and this union-nonunion employment probability differential, declines with increasing levels of privatization. This employment result is interpreted as suggesting that labor cost savings from privatization can be derived from the enhanced employment of relatively low wage nonunion workers in the public sector of public transit services.     

中美之间的集装箱运输

2003年7月出版的英文“亚洲海运“杂志指出,以往,每当美国的国内经济状况低迷甚至恶化的时候,泛太平洋航线的集装箱运输就会出现明显的萧条,但是这种现象已经成为过去.     

美军联合空情图构思及其发展

美国JSSEO使用MDA^TM（模型驱动结构）方法研发IABM（集成结构行为模型），一种与平台独立的对等计算程序模型，是构造单一合成空情图（SIAP）的中心部件。它融合和处理多个本地和远程传感器数据，旨在确保多个IABM单元为所有用户创建和维护一个相同的协调一致、及时和准确的空中目标航迹图。     

美军军事通信卫星发展趋势分析及启示

文章讨论了美军先进的军事卫星通信系统,分析归纳了美军卫星通信的特点与发展趋势,并针对我国军事通信卫星发展现状阐述了需要解决的关键技术问题及发展思路。