综合船舶导航集成系统中的云平台架构设计

定位导航系统是海上电子信息系统关键设备之一,其定位时效性与精度影响海上航行安全。现有海上导航定位技术有GPS、北斗卫星、红外信号及雷达信号等,传统单机处理模型已经不能满足综合导航集成系统的信号处理性能要求。本文设计了基于云平台架构的综合船舶导航集成系统,研究一种面向服务的私有云架构,最后进行了仿真。仿真结果表明,设计的综合导航系统精度和时效性优于传统导航系统。     

北斗卫星导航系统在水下无人航行器中的应用方案研究

本文阐述北斗卫星导航系统在水下无人航行器的几种主要应用方案,根据北斗卫星导航系统的导航定位和短报文通信功能特点,将北斗在UUV的应用分为两大类:一类主要利用北斗导航提供导航定位服务,如组合导航、基于北斗的水下导航系统等;另一类主要利用北斗系统的短报文通信服务或兼具使用导航定位服务,如基于北斗卫星导航系统的UUV遥控系统等。本文为水下无人航行器的北斗卫星导航系统应用提供了发展思路。     

东海海区北斗地基增强系统建设与应用研究

北斗卫星导航系统以其精准定位、授时和短报文收发功能,将导航、定时和通信有机融合在一起,为海上业务开展提供了极大的便利。北斗地基增强系统是北斗高精度定位能力的基础设施,文中介绍了北斗地基增强系统的发展现状及基本服务能力,重点从系统建设、参考站建设、数据处理服务中心以及精度测试等方面阐述了东海海区北斗地基增强系统的建设情况,并就系统在海事航海保障领域的应用进行了展望。     

海上险情处置可视化通信研究

通过对融合VSAT卫星通信系统、LTE基站、北斗CORS、船舶安保系统等多种通信系统的研究,以实现船舶海上通信可视化为目标,为海上公务船舶提供高速、稳定的通信服务。船舶出海时,在视频会议、船舶安保、海上取证、业务数据传输、航标巡检、应急指挥搜救、应急无线组网等场景均可实现岸上可视化操作与指挥,增强海上通信服务保障能力,提升应急搜救保障水平,为建设智能航保、服务交通强国提供技术支撑。     

基于手机客户端和北斗的海上互救辅助报警系统研究

通过分析小型船艇“报警难、救助慢”的痛点,结合目前智能手机的普遍配备,移动通信技术、北斗定位和通信技术的广泛应用,提出建立基于手机客户端和北斗的海上互救辅助报警平台的技术方案,在紧急情况下为遇险小型船舶提供精准定位和报警服务,实现高效遇险报警和海上自救与互救,并作为全球海上遇险与安全系统的重要补充。     

北斗卫星导航系统在舰艇上的扩展应用

北斗卫星导航系统能够为舰艇用户提供定位、导航、授时和短报文通信服务。通过对北斗系统的进一步开发和利用,能够更好地发挥其军事效能,提高舰艇的信息化水平。本文在分析北斗系统性能特点的基础上,提出将其应用于舰艇装备维修远程支援、舰载雷达标定和舰艇态势实时监控的具体方案,为北斗系统在舰艇上的扩展应用提供借鉴和参考。     

船载通信监控网络对北斗高频信号的捕获技术

北斗卫星是我国自主研发的一种全球定位与通信卫星,基于北斗卫星,舰船、汽车、飞机等能够实现准确的定位、通信等功能。在基于北斗卫星的船载通信监控系统中,北斗高频信号的捕捉、译码是实现通信与监控功能的前提,这是本文重点研究的内容。本文首先介绍基于北斗卫星的船载通信监控系统原理,然后结合北斗高频定位信号的特点,开发一种高频信号捕捉电路,有助于提高船载北斗通信监控系统的性能。     

基于北斗卫星的船舶监控系统的数据通信技术开发

不论是在内河航运还是海上货物运输,为了保障水路交通运输的效率和安全性,都必须要加强船舶的实时监控。北斗卫星通信与导航系统是我国独立研发的一种有源三维卫星定位系统,可以为用户提供高精度定位、实时通信等功能。本文的研究对象是船舶监控系统,系统介绍了北斗卫星导航系统的组成和工作原理,并在此基础上研发了监控系统的数据通信技术。试验表明,基于北斗卫星的船舶监控系统具有覆盖范围广、船舶定位精度高、时效性强等优点。     

基于北斗技术的海上安全与通信系统

以北斗卫星导航系统为基础架构,自主研发我国的海上安全与通信系统,以更好地保障海上生命和财产安全,掌握核心安全数据信息,及时有效地应对重特大突发事件,实现时间域、空间域和数据域的三维信息通信与交互,为船舶提供全时域、全海域的高保密性以及连续可靠的通信、导航和监视服务。系统通过融合北斗导航定位系统和卫星增强系统两大资源,采用卫星无线电测定业务收发扩容技术、模块化开放式系统架构设计和基于北斗技术的海上安全与通信机制等关键技术,构建基于北斗技术的全球海上安全与通信体系。系统可实现全球海上遇险与安全通信、海上安全信息监控、区域选择性海上安全信息播发与接收、特别业务及海上常规数据通信等功能。开发该系统对提高船舶航行安全性、加强安全数据监控、保障海上生命和财产安全具有重要的战略意义。     

基于北斗的航标遥测遥控系统设计

北斗卫星导航系统（BDS）是中国自行研制的全球卫星定位和通信系统,可为各类用户提供高精度、高可靠定位、导航,授时及短消息通信服务.文中对北斗卫星导航系统进行了概述,介绍了其定位及通信原理.针对远海航标因远距离无线通讯无法进行遥测遥控的问题,提出了一种基于北斗卫星导航系统的航标遥测遥控系统设计方案.     

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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第34届海洋、离岸及极地工程国际会议(英文)

正St.John's,Newfoundland,Canada,May 31-June 5,2015 OMAE2015 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;     

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。     

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）.     

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.     

桥梁防撞设施物理模型试验

物理模型试验是预报防撞设施所受撞击力及优化设计方案的主要方法之一。结合杭州湾大桥柔性防撞设施及东海大桥独立式防撞体设计方案,阐述了船—防撞体撞击试验的基本原理、方法、试验方案及相关试验结果。提出了柔性防撞系统的优化方案。试验结果表明,该方案经济有效,可供预报类似桥梁防撞设施撞击力时参考。     

印尼某电厂码头水工建筑物设计

印尼某电厂项目码头水工建筑物包括码头、防波堤和护岸等主要组成部分。在该项目水工建筑物的设计过程中,综合考虑当地的自然条件、施工能力和材料来源等因素,不断优化结构选型和结构断面。根据不同使用要求,护岸分别采用直立式和斜坡式2种结构型式,推荐的设计方案节省投资、施工方便,可供同类工程设计参考。     

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.     

开放式数据挖掘系统模型

目前国内已经出现了少量的数据挖掘相关产品。国内数据挖掘软件无论从数量还是质量上比较，都与国外软件存在着较大的差距。随着数据仓库技术的普及，数据挖掘应用的需求越来越强烈，如何缩短这种差距，研发数据挖掘软件产品成为国内业界的一个重要问题。通过引用目前国际通用数据挖掘标准技术来构建开放式的数据挖掘系统模型，该系统模型从可扩展性、可重用性、易用性等方面得到了加强。