三维虚拟海洋图像仿真在舰艇视觉中的应用

在计算机视觉环境下建立舰艇防御和攻击的虚拟场景的重点是对三维虚拟海洋图像的仿真实验,传统的三维虚拟海洋视景仿真中在操作进程和虚拟数据资源配置中采用单线程设计,无法实现并行处理,视景效果不好。提出一种基于海洋拓扑结构网孔分解的三维虚拟海洋仿真技术并应用在舰艇的被动防御视觉系统中。构建三维海洋环境下舰艇的视觉控制模型,在MPI的视景仿真渲染工具Vega Prime中进行海洋三维视景建模,采用海洋拓扑结构网孔分解算法进行三维虚拟海洋视景仿真方法改进,在舰艇防御视觉系统中实现舰艇防御三维视景仿真,实验结果表明,采用该方法进行视景仿真,三维虚拟海洋具有较好的实时视景仿真渲染效果,视点转换和视点控制流畅,提高了在三维海洋环境中实现舰艇视觉仿真的可观性和可靠性。     

潜艇操纵控制系统仿真平台设计与实现

从潜艇操纵控制仿真系统的实际功能需求出发,构建了潜艇操纵控制系统仿真平台。合理简化潜艇运动六自由度模型,将自抗扰控制技术引入潜艇航向及深度控制系统中,用分平面法设计了潜艇航向和深度自抗扰控制舵。采用面向对象的编程技术,设计开发了仿真平台的控制系统实时界面、完成了对潜艇运动控制方程的解算,并在仿真平台上分别进行了系统软件模拟操纵、潜艇垂直面运动控制、狭窄水道航行训练视景仿真等实验,仿真结果表明仿真平台软硬件设计合理、自动控制舵的控制性能良好,实现了操作人员和虚拟环境的交互。     

潜艇艇群反航母协同作战仿真试验

在分析潜艇艇群协同作战的特点和反航母作战需求的基础上,提出基于HLA体制的潜艇艇群反航母协同作战仿真系统的组成、功能和体系结构。基于仿真系统描述潜艇艇群反航母协同作战仿真试验设计的方案,在对抗环境下分析不同作战形式和样式下潜艇艇群反航母协同作战仿真的效果,对反航母作战的深化研究具有一定的指导意义。     

船艇模拟训练战场环境三维视景的仿真设计及关键算法研究

在船艇模拟训练系统中,首先要解决好战场环境三维视景的仿真问题.结合某型船艇装备模拟训练系统的研制,讨论了战场环境三维环境视景的总体结构、软硬件设计,分析了三维视景的技术实现,并对所涉及到的三维坐标变换、视景投影、摇摆处理、视域裁剪等关键算法进行了研究,给出了三维地形仿真效果图和船艇模拟训练视景输出仿真效果图.通过合理的设计和优化的算法,为船艇训练提供了逼真的自然环境和实战化的战场环境,较好地解决了仿真过程中船艇运动建模与实时显示的技术难题.     

模拟潜望镜半实物仿真系统设计与实现

介绍了模拟潜望镜半实物仿真训练系统的设计和实现方法。对潜望镜本体进行改造,设计了光学透镜为通道的视野光路,通过单片机接口完成对基本操作信号的采集和控制。建立潜艇操纵仿真模型解算运动参数,视景控制系统进行综合设置和信息显示,视景模块实时动态渲染虚拟潜望镜视景。系统设计结构合理,具有实用性和可扩展性。     

视景仿真在舰船作战系统陆上仿真试验中的应用

舰船作战系统陆上仿真试验引入视景仿真技术的目的是：为光电跟踪系统、红外跟踪或预警系统仿真试验提供光学动目标场景；提高战术环境仿真的逼真度，使作战系统陆上仿真试验更加完善化。本文探讨应用视景仿真技术实现上述仿真试验的方法。     

潜艇作战系统战位复用技术初探

潜艇作战系统战位复用设计是潜艇作战系统在操控一体化方面的重要体现。战位复用技术有以下一些优点：减少艇员配置;提高潜艇作战系统可靠性;动态扩展作战系统功能;有利于整个潜艇作战系统的维护。描述潜艇作战系统战位复用的内涵,分析潜艇作战系统采用战位复用的必要性。根据潜艇作战系统的典型战位设置,提出未来新型潜艇作战系统战位设置的设想及实现思路。最后分析潜艇作战系统战位复用技术带来的效益。     

基于OpenGL的海洋环境三维可视化仿真

文章从改善潜艇作战环境的需要出发，提出了基于OpenGL进行海洋环境的三维可视化仿真，研究了仿真程序的交互式设计，介绍了用求值程序改善仿真可视化效果的方法。     

虚拟现实技术在援潜救生中的应用

基于软件平台Vega和Creator软件开发出援潜救生的视景仿真系统.详细描述了虚拟现实技术、系统的总体描述、系统软件的选择、系统应用框架,以及软件系统功能模块的设计与实现.仿真结果表明,该系统能逼真地演示出援潜救生的整个过程,能实现从多个视角有效地观察整个过程中各个物体的运动情况,并且满足不同情况下的仿真需要.建立一个基于援潜救生的视景仿真系统,生成三维视景效果场景,做出视景仿真管理界面.     

海军航空兵作战指挥训练系统的关键技术研究

开发海军航空兵作战指挥训练系统可提高海军航空兵部队仿真训练和院校教学的质量.通过对海军航空兵编队联邦仿真成员的开发、集成、运行和管理,分析了海军航空兵作战指挥训练系统的关键技术.介绍了海军航空兵作战指挥训练系统的功能和框架.基于分布交互仿真体系结构和虚拟仿真技术,设计并实现了视景仿真系统.分析了海军航空兵作战指挥系统自动评估成绩技术和蓝方计算机生成兵力技术.     

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;     

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.     

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.