AIS简介及其在国际航行船舶检疫中的应用研究

简要介绍了船舶自动识别系统(AIS)和国际航行船舶检疫工作面临的挑战。利用AIS的特点和优点,将AIS应用于国际航行船舶检疫工作中,研发了国际航行AIS船舶电子监管系统,并重点介绍了系统功能。     

一种用于导航雷达标校的专用AIS设备

基于导航雷达和通用AIS设备的基本原理,通过对现有AIS设备的改造,设计了一种专用设备,可以用于导航雷达的快速标校,保障船舶航行安全。     

基于Mapinfo电子海图和AIS的船舶导航系统的研究与实现

本文从技术实现角度出发，探讨了基于Mapinfo格式的电子海图以及AIS（Automatic Identification System，船舶自动识别系统）技术和性能指标。在此基础上，设计了基于Mapinfo电子海图和AIS通信的船舶导航系统，并在辅助船舶航行中得以应用。     

基于计算机软件技术的AIS与导航雷达信息融合机制研究

海洋经济的发展推动了现代海洋渔业、运输业的发展,随着海上航线的日益繁忙,海上航行安全问题则日益凸显,而单一的航行数据不仅可靠性相对偏低,且需要进行二次处理和系统对比验证,以至于无法满足现阶段船舶航行安全的需要。本文以计算机软件技术为支撑的信息融合机制为研究内容,提出AIS、导航雷达数据融合方案,从而为船舶航行安全提供系统化保障。     

基于S-Transformer的多模态船舶轨迹预测

船舶轨迹预测是实现船舶智能航行的前提与基础. 目前, 针对船舶轨迹预测的研究大多仅依赖于船舶自动识别系统(AIS)历史数据, 而未利用到船舶上其他传感器信息. 于是本文提出了一种多模态轨迹预测模型——S-Transformer. 在该网络中, 电子海图中的海水/陆地被分割作为辅助训练目标与真实舟山港AIS数据加以综合从而对模型进行训练, 并对船舶未来航行轨迹进行预测; 其中, 本文还引入segment recurrence来捕获AIS数据的长期依赖关系. 实验结果表明, S-Transformer在不同的船舶行驶情况中都有优秀的预测结果, 并优于相关预测任务的单模态基准模型.     

基于Visual C#的AIS模拟器设计与训练研究

本文作者讨论基于Visual C#开发AIS模拟器,利用C#.NET类库可以轻松开发模拟器,使实验室建设费用降低,采用AIS模拟器不仅可以像真机一样提供信息,也避免了影响正常航行的船舶,学生实训效果提高很大。     

利用AIS串口数据进行船舶避碰仿真

通过分析AIS串口所输出的信息,将该信息分成两类,分别对两类信息进行分析,提取有利于船舶航行仿真的数据。根据抽样时间分别为每一船舶编制数据结构表,然后将该表内容转化为平面图,船舶之间的避让态势就一目了然。     

小型货船“新海信888”AIS信号无法识别的原因分析

AIS(Automatic Identification System)系统是一种融合现代技术的新型航海助航设备,其对于船舶安全航行、海上交通安全管理、航海安全保障等具有重要作用。目前船载AIS系统分为A级与B级两大类型。A级AIS,发射功率大、天线高度高、信号强度稳定,普遍装载于大型船舶上;B级AIS是为中小型船舶研发的AIS产品,装载于部分60米及以下小型船舶,与A级AIS比较,B级AIS发射功率较小、天线高度低、信号强度弱且容易丢失。由于AIS系统级别不同导致信号强度有较大差异。本文主要结合实际监视工作中,AIS的基站对不同级别的船载AIS系统接收效果,分析部分船只AIS系统无法识别的问题并提出预防措施。     

电子海图系统研究与设计

电子海图系统(Electronic Chart System,简称ECS)能够综合处理海上地理信息、本船航行状态信息、目标船动态信息和航行环境信息;可以接入GPS、舰船自动识别系统(AIS)、罗盘和测深仪等传感器;具有完善的海图显示、航线设计、船舶导航、避碰辅助和航行管理功能。     

基于LSTM的船舶航迹预测模型

针对海上日趋复杂的情形,提高船舶交通服务系统(Vessel Traffic Service,VTS)的决策水平迫在眉睫。针对船舶航行轨迹多维度的特点以及对船舶轨迹预测的精确度和实时性的需求,提出了结合船舶自动识别系统(Automatic Identification System,AIS)数据和深度学习的船舶航行轨迹预测方法。构造基于AIS数据的航行轨迹特征,提出了循环神经网络-长短期记忆(Recurrent Neural Networks-Long Short-Term Memory,RNN-LSTM)模型,利用广州港内的船舶AIS数据对模型进行训练,并对未来船舶航行轨迹进行预测。实验结果表明,利用RNN-LSTM模型的预测方法具有精确度高、易实现的特点,并且与传统处理方法相比,其在处理序列数据方面更具优越性。     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

基于QTE的蒙古文显示机制研究与实现

蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

基于AD9626的模拟信号采集存储卡设计

自然界的绝大部分信号都是以模拟的形式存在,因此模拟信号的采集转换存储在数字时代十分关键。文章讨论了在雷达信号处理领域基于AD9626的AD采集存储卡的设计原理、硬件结构和程序设计与芯片配置等问题,为今后相关领域的研究提供了可参考的方案。     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

A human-computer interface for non-computer specialists

The COM teleconferencing system was designed to be easy to use for both beginners and people with much computer experience. A number of design choices in organizing the human-computer interface were considered very carefully. These design problems are not unique for teleconferencing applications, but will appear in many other developments of human-computer interfaces for non-computer specialists. This report discusses naming conventions, menu format, user commands, help facility and the treatment of ‘type ahead’ from the users.