舰/机协同雷达有源压制干扰作战能力评估

针对舰/机协同雷达支援式干扰作战能力的评估问题,建立了雷达探测距离模型和舰/机载协同支援式干扰模型;分析了雷达探测距离与干扰机增益、干扰机功率之间的关系,雷达与被掩护目标的不同位置关系下的压制干扰能力;分别提出了基于战场态势下的干扰机和被掩护目标的配置和部署的计算方法;对舰/机协同对多部雷达进行支援式干扰的有效压制区域的计算进行仿真.对干扰作战的组织指挥、兵力配置有借鉴价值     

干扰条件下舰载雷达的效能评估

给出干扰条件下舰载雷达效能评估的一种方法.通过对雷达接收机输入端干扰功率的计算,进而求出"信/干"比,此结果可直接用于舰载雷达在干扰环境下发现目标概率的计算中.     

基于模式识别的自适应有源干扰策略研究

实现对跟踪雷达有效干扰是雷达对抗装备的重要目标之一,论文基于认知电子战概念设计了一种自适应雷达有源干扰策略。首先对认知电子战的概念及关键技术进行了阐述,并根据雷达参数特征设计了模式识别方法,并以压制性干扰为主分析了有源干扰原理,通过雷达侦察设备分析跟踪雷达的工作模式并保持实时侦收感知,对同一跟踪雷达目标的不同工作模式自适应地使用不同的有源干扰样式进行干扰,以达到更优的干扰效果。测试结果表明,该方法可有效提高干扰成功率,具有一定的实用价值。     

电子战无人机分布配置干扰雷达建模仿真研究

电子战无人机分布配置干扰是对抗新型雷达的有效手段,在电子对抗领域扮演着越来越重要的角色。文章分别建立雷达在无人机分布式干扰情况下的探测威力和暴露区计算数学模型,通过实例仿真对比,得出不同配置情况下无人机干扰对雷达探测能力的影响程度。     

舰艇编队多平台压制性支援干扰效能分析

支援干扰在舰艇编队电子对抗作战中具有重要意义.基于雷达有源压制干扰手段下的多平台协同支援干扰问题,和传统单平台自卫式干扰相比,具有不易暴露目标和能有效分配干扰资源等显著优势.本文在对舰艇编队实施多平台压制性支援干扰问题的效能分析中,重点讨论多平台协同干扰对有效干扰扇面和掩护区的影响,得出了多平台协同支援干扰提高使用效能的方法结论,对于编队协同压制性支援干扰的战法研究具有一定的借鉴意义.     

预警直升机在现代战争中的作用

早在二战末期，预警机就作为海上机动雷达平台得到应用。早期预警机首用于海上，是因为早期机载雷达不具备地面低空探测能力，而海上的背景干扰比地面要低很多，机载雷达对低空目标具备一定探测能力。美国海军利用TBM鱼雷机和APS20雷达的组合，推出可在航母上装备的舰载预警机，就是为了在舰队防空中填补低空盲区，弥补舰载对空搜索雷达对低空目标搜索距离不足的缺陷。     

地面中重频PD雷达探测巡航导弹性能分析

为了提高对低空小目标,尤其是对巡航导弹的探测能力,地面对空情报雷达已采用中重频PD体制。文章简要分析了地面雷达采用中重频PD体制杂波重叠、距离-多普勒盲区等问题,重点对巡航导弹探测性能进行了仿真分析。仿真结果表明,在距离较近的强杂波干扰环境中采用中重频PD体制对巡航导弹具有较强的探测能力。     

舰载雷达有源压制干扰最小干扰距离研究

依据舰载雷达有源噪声干扰的原理及特点,对在理想条件下的舰载雷达最小干扰距离进行了推导,给出了影响其的多个因素,并结合这些因素得出复杂条件下舰载雷达最小干扰距离的计算模型。通过实例对该模型进行检验,得出结论。     

面向识别的船舶目标雷达回波技术研究

雷达系统在船舶导航控制中具有非常重要的作用,其不光能够实现目标探测,同时也能够对目标的运动状态进行识别,因此,本文重点优化了船舶雷达的目标探测能力。本文首先介绍船舶雷达信号自动检测系统的工作原理,通过加入抗干扰算法,提高了雷达对目标的识别能力,在对回波技术进行优化的过程中,主要通过优化调制模型实现,首先将雷达回波中的各项干扰噪声进行滤除,保证了回波信号的正确率,这样在目标检测时,优化后的雷达回波中包含了更多的有用信息,提高了其目标检测能力。     

舰船雷达隐身的战术价值定量分析与计算

阐述了舰船雷达隐身的主要技术措施,分析了舰船雷达隐身对作战诸方面的影响和作用,建立了舰船雷达隐身的战术效用模型,分析计算了舰船雷达隐身后对发现距离、目标识别、导弹截获概率、质心干扰等4个方面的战术价值,这些模型和计算结果对隐身舰船在海上作战中的战术运用具有指导作用。     

33rd International Conference on Ocean,Offshore and Arctic Engineering （OMAE2014）

正San Francisco,California,June 8-13,2014.OMAE 2014 is the ideal forum for researchers,engineers,managers,technicians and students from the scientific and industrial communities from around the world to:·meet and present advances in technology and its scientific support;·to exchange ideas and experiences whilst promoting technological progress and its application in industry·to promote international cooperation in ocean,offshore and arctic engineering.In line with the tradition of excellence of previous OMAE conferences,more than 900 technical papers are planned for presentation.Outreach for Engineers Specialty Forum This Specialty Forum is designed for students and professionals who may not be familiar with the Ocean and Offshore industry,as well as those who have just recently specialized in this field.     

Errata

正In the paper"Influence of Fouling Assemblage on the Corrosion Behaviour of Mild Steel in the Coastal Waters of The Gulf of Mannar,India"in Vol.12,No.4,Page:509,References were lost,and the two authors’biographies were identical.The correct text is shown below.We apologize to the authors and our readers for any inconvenience caused by the errors.     

Journal of Marine Science and Application 2014 Sum. Contents

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联合作战计划和执行系统

全球指挥控制系统(GCCS)实施当前美国海军网络中心战信息基础设施的联合计划网络。联合作战计划和执行系统(JOPES)支持GCCS实现联合计划。JOPES有两类计划：时间不限的精密预案计划生成作战计划、方案计划或职能计划；时间敏感的危机行动计划生成作战命令或战役方案。前者在和平时期创建的作战计划是后者的计划基础，加速应付危机的能力。     

Recent progress on wave induced loading measurements in warships

Recent measurements of wave induced hull strain and flexure in RN warships are presented together with the derivation of the current design criteria for extreme hull girder bending loads. The history of the development of the shipboard instrumentation used is given and recent developments to improve the quality and ease of analysis of the data are described. An unexpectedly high transverse asymmetry in the longitudinal strains measured in destroyers is shown to be the result of a combination of vertical and lateral bending in oblique seas. Finally recent theoretical comparisons between the loading of Deep-Vee hulls and conventional UK rounded bilge hulls are presented which demonstrate the higher loading experienced by this type of hull form.     

The 11th International Conference on Hydrodynamics (ICHD 2014)

正19–24 October 2014 SingaporeCONFERENCE THEMES The overall aim of the ICHD Conference is to provide a forum for participants from around the world to review,discuss and present the latest developments in the broad discipline of hydrodynamics and fluid mechanics.The first International Conference on Hydrodynamics(ICHD)was initiated in 1994 in Wuxi,China.Since then,9 more ICHD conferences were held subsequently in Hong Kong,Seoul,Yokohama,Tainan,Perth,Ischia,Nantes,Shanghai and St Petersburg.Evidently the ICHD conference has become an important event among academics,researchers,engineers and operators,working in the fields closely related to the science and technology of hydrodynamics.The 11th ICHD will be held in Singapore in 2014.     

第十二届深水操作会议和展览会(英文)

正November 4-6,2014Moody Gardens HotelConvention Center/Galveston,TX The Deepwater Operations Conference and Exhibition is celebrating its 12th anniversary this year.This growing event will continue the tradition of excellence in addressing operational challenges involved in developing deepwater resources.We will return to the Moody Gardens Hotel and Convention Center on November 5-7,2014 in Galveston,Texas.     

Eastbound or westbound ?

In terms of equal sailing distances, where is the inflexion when ships depart from ports in the Asian Continent to New York via Suez and/or Panama？
The answer is China South Port Group （Hong Kong, Shenzhen and Guangzhou）.     

Impact of regulation on the performances of long-distance transport services: A comparison of the different approaches in Sweden and Norway

Despite the many socio-economic similarities between Sweden and Norway, differences in jurisdiction, organisation, cooperation, and financing of long-distance passenger train and coach services have led to the development of four distinctively different ways of serving the markets. This paper describes how the train and coach markets have developed in the two countries, with emphasis on regulatory and industrial structure and a couple of performance variables.Looking at passenger rail, both countries separated infrastructure from operation over a decade ago. However, while Norwegian rail is characterised by an almost monopoly supplier, rail services in Sweden are partly decentralised to the responsibility of county authorities and are widely subjected to competitive tendering. The rest of the network is about to be opened up for on-the-track competition. Swedish Rail (SJ) has spent the last decades consolidating its core business (passenger rail) and sold out its other businesses. In contrast, the Norwegian state rail (NSB) has expanded its business to become a major bus operator and property owner, with extensions also into the Swedish market.The coach industry was more recently deregulated in both countries. The Swedish coach market is dominated by privately owned companies operating services to and from Stockholm. In Norway, state-owned NSB is a major coach operator on medium distance routes, and is also the largest partner of Nor-Way Bussekspress which totally dominates long-distance coach services. Further, the Norwegian coach market is characterised by cross-ownership and cooperation which has enabled an extensive route network which covers most of Norway.We find distinct differences in achievements in the two modes and in the two countries. Swedish rail services have succeeded in winning market shares and in renewing and developing both infrastructure and service levels to a greater extent than the Norwegian model. On the other hand, the Norwegian coach market seems to be more developed and efficient compared to its Swedish counterpart.The paper concludes with a discussion on the possible links between the different approaches and the performance observed, with the aim to stimulate further and more detailed research on some important issues.     

某海港码头的撞损修复

依据码头撞击受损区域调查检测结果,对受损构件提出合理的修复方案,为码头的安全运行提供保障。