RDSS/LORAN-C组合导航的实现方法研究

目前，世界各国都认识到在开发应用卫星导航系统的同时，必须继续发展陆基无线电导航系统。因此，我国在大力发展双星导航系统(RDSS)的同时，还应继续加强LORAN—C系统的的研究，积极开发RDSS／LORAN—C组合导航的潜力。本文对RDSS／LORAN—C组合导航的优势和可实现性进行了分析，提出了三种不同的数据组合方法，并给出了这三种方法性能的简单比较。     

罗兰-C／GPS组合接收机应用分析

本文在概述罗兰-C（LORAN-C）远程导航系统与导航星全球定位系统（GPS）组合应用优点基础上，以国产船用XN-969型罗兰-C／GPS组合接收机为例，分析了罗兰-C导航系统与GPS导航系统组合接收设备的主要技术指标、工作原理、导航功能和基本操作使用方法。     

组合导航系统在导航战中的作用

随着导航技术的发展，导航系统的种类越来越多，将多种导航技术组合形成组合导航系统是导航技术发展的一种必然趋势，也是迎接导航战挑战，提高导航作战能力，削弱敌方的导航能力，掌握未来战场的主动权的必然选择。介绍了导航技术和导航战，分析了美军导航战的发展现状，阐述了组合导航系统及其在导航战中的重要作用。     

现代舰船组合导航系统的信息融合

基于当前舰船组合导航系统的发展趋势与应用前景，对导航信息的融合技术进行了探讨，并提出了具有互补特性信息融合的原则和方式以及几种导航信息融合的结构模式与特点，指出了发展信息融合技术，进行应用研究的方向和前景。     

智能化DR／GLONAS S／GPS导航系统

本文介绍和论述了智能化DR／GLONAS S／GPS导航系统利用高效低价位的DR系统与全球卫星导航系统GPS和GLONASS的相组合，采用先进的KALMAN滤波器及计算机的网络技术形成一个高精度的数字化的智能化导航系统，该系统能提供可靠的连续的高精度的三维定位。同时也论述了该系统的相关原理组成及演算方法。     

基于惯性导航/地磁的水下潜器组合导航定位方法

针对水下潜器长时间水下航行的隐蔽性且定位精度不高的问题,提出了一种基于惯性导航/地磁的组合导航系统。建立了惯性导航/地磁组合导航系统模型,并且利用卡尔曼滤波算法对系统进行滤波。最后通过仿真实验表明,该组合导航系统能够有效弥补单惯性导航系统精度发散的不足,提高了导航精度,实现了水下潜器的精确导航。     

惯性导航系统INS与GPS系统的组合应用

由于传统的惯性导航系统设备是分离式的，且精度又较低，加上高价位的惯性系统的传感器是阻碍它被广泛应用于与GPS进行组合导航的主要原因。但近年来出现的低价位、高精度的传感器，使得惯性导航系统集合化、小型化成为现实。这也就使得惯性导航系统与全球卫星导航系统的组合导航系统成为可能，从而为解决民用GPS或GLONASS全球卫星导航系统存在的问题提供了另一个有效的途径。本文论述和介绍了该组合系统的工作原理及相关问题。     

神经网络在组合导航定位算法中的应用研究

针对无源北斗1号/惯导组合导航系统滤波定位算法,文章提出并设计了神经网络及其训练算法RLS,用其输出修正组合导航滤波输出结果,提高组合导航系统的定位精度。通过仿真验证了此方案的可行性,并能有效提高北斗1号组合导航系统的定位精度。     

简化UKF算法在SINS／GPS组合导航中的应用

针对SINS／GPS组合导航系统的特点，建立了系统的非线性误差模型。根据系统状态方程为非线性而观测方程为线性的特点，将一种简化的UKF方法（Rao-Blackwellisation Additive Unscented Kalman Filter，RBAUKF）用于SINS／GPS组合导航系统中，RBAUKF采用较少的采样点数目和简化的更新算法，降低了计算复杂度。最后，在机动条件下，进行了SINS／GPS组合导航实验仿真。仿真结果表明，RBAUKF相比EKF具有更高的滤波精度，更适合在SINS／GPS组合导航系统中应用。     

云计算在舰船导航系统中的研究

海上导航系统在航运业中的应用越来越广,导航系统定位的精度也影响着众多海上开发应用。现有的基于卫星导航系统定位存在一定的误差,所以需要对定位结果进行误差补偿。传统的补偿法一般为差分法,与导航设备与观测站距离的远近成正比。本文研究基于云计算的误差补偿算法,给出云计算的海上卫星导航系统的误差补偿系统结构,在此基础上进一步构建基于GPS、北斗组合导航系统的补偿算法模型,最后对算法进行仿真。     

船用动态GPS／INS模拟器的设计

本文设计了一种实时的动态GPS／INS组合模拟器，为测试GPS／INS组合系统精度、考查组合系统性能提供了一种多功能的实验设备。本文推导了GPS／INS模拟器的数学模型，利用该模拟器，对本文提出的两种船用组合方案做了比较，其中一种方案已经通过了1994年在南海进行的海上试验。实际应用表明石GPS／INS模拟器可以模拟不同性能、不同工作状态及不同精度的GPS和惯导系统，具有较高的实用价值。     

船舶燃气轮机装置分布式集成仿真平台设计

针对船舶燃气轮机装置分布式集成仿真的功能,设计了包括应用层、支撑层、通讯层和设备层在内的分布式集成仿真平台体系层次。选择 MATLAB/SIMULINK环境开发应用层和支撑层,选择HLA协议和RTI软件实现通讯层。最终形成了由平台运行管理器、分布式仿真包、模块化模型库、分布式仿真接口以及RTI软件组成的“服务器/运算节点”式的平台运行框架。通过某型双轴燃气轮机在机械推进工作方式下的分布式集成仿真实验,初步验证了平台体系框架的合理性和有效性。     

基于ADuC和LabView的温度压力集成测试系统设计

介绍了一个使用ADuC集成芯片进行AD采样、信号调理、通讯传输和应用LabView环境实现测试数据软件补偿的低功耗、低成本的温度压力集成测试系统。从系统硬、软件设计要点、数据补偿等方面,详细描述了系统设计过程。提供了一种较为经济、便捷的集成测试方法。     

Governing Coastal Spaces: The Case of Disappearing Science in Integrated Coastal Zone Management

Scientific knowledge is central to “good” governance of coastal spaces: developing methods through which the complexities of the coastal zone can be understood by stakeholders to improve the sustainable management of coastal systems. Enhancing our knowledge of the range of processes that shape coastal spaces and define the total behavioural environment of the system remains a primary challenge for the coastal research community. However, this article raises the argument that current approaches to Integrated Coastal Zone Management (ICZM)—the preferred governing framework for the coastal environment, do not give sufficient emphasis to this fundamental need. Improving the basic scientific knowledge that underpins policymaking at the coast is argued to be urgently needed. Issues such as that of developing a communality of the purpose and approach between stakeholders within the coastal zone (through conflict resolution and access to information, for example) seem to claim the rights of the integrated management research agenda. However, the very nature of ICZM as “worthwhile coastal management” requires that integrated management represents more than a governing framework. Successful integration in coastal management must also be underpinned by knowledge of the integrated behavior of the system. Science has an increasingly marginalized position within ICZM and as a result geographers, contributing knowledge of the patterns and processes of the human and environmental landscapes, are also becoming a disappearing breed in integrated coastal management.     

船舶综合导航系统仿真技术研究

本文以用惯性导航系统（ＩＮＳ）和静电陀螺监控器（ＥＳＧＭ）为中心的综合惯性导航系统为背景,讨论了综合导航系统研制过程中的数学和半实物仿真技术。     

An integrated programming model for storage management and vehicle scheduling at container terminals

In this paper, we study the optimization of yard operations, which are critical for the terminal efficiency. A linear mixed integer programming (MIP) model is proposed for scheduling different types of equipment and planning the storage strategy in an integrated way. We also investigate a nonlinear mixed integer programming (NLMIP) model to reduce the number of constraints and the computational time. A set of numerical results are carried out for the comparison between the linear model and the nonlinear model. Finally, we propose a genetic algorithm for the MIP model to illustrate how large scale problems can be solved and to show the effect of different factors on the performances of the optimization model.     

基于嵌入式Linux的船舶组合导航系统设计与实现

针对小型船舶和引航员对组合导航系统的需求,提出一种基于嵌入式Linux的船舶组合导航系统解决方案,该系统采用嵌入式系统硬件构架、Linux操作系统和嵌入式图形用户界面,在研究嵌入式系统下电子海图的海图数据处理、组织与显示等关键问题基础上提出嵌入式组合船舶导航系统的实现。     

综合船桥系统研究综述

综合船桥系统是全船自动化的重要组成部分,本文首先阐述了综合船桥系统的发展,然后着重研究了该系统的组成、主要研究内容及研究方法,并提出了存在的问题,最后对该系统的研究发展进行了展望。     

Integrated optimisation design of a dynamic umbilical based on an approximate model

An optimised design of a dynamic umbilical requires an extreme cross-sectional stress to be maintained within an allowable limit and a fatigue life to be guaranteed to be sufficient. It should be noted that a dynamic umbilical is a typical geometric bi-scale structural system. It consists of a local cross-sectional scale and a global configuration scale, which are significantly different in terms of geometric sizes. In this study, we established an approximate model to achieve an optimised design of the dynamic umbilical by considering the parameters of local cross-sections and global configurations simultaneously. The design variables of a dynamic umbilical are independently identified and defined at both local sectional and global configuration scales in the approximate model. Furthermore, we selected the maximum tension strain and the maximum bending moment, for covering local and global properties, as the objectives to be minimised. The approximate model was observed to be effective in integrating the local and global responses into one loop so that the computational efficiency could be significantly increased. We implemented the optimisation framework on a dynamic umbilical with a lazy-wave configuration, which is considered to be a basis for a case study. Furthermore, we verified the feasibility and effectiveness of the integrated optimisation strategy by numerical simulations. Moreover, we compared the optimised dynamic umbilical properties with those without optimisation. It was observed that the fatigue life of the optimised dynamic umbilical was improved significantly, thereby indicating that the integrated optimisation methodology provides a new model and algorithm for an efficient design of the dynamic umbilical.     

An integrated framework for carbon footprinting at container seaports: the case study of a Chinese port

The objective of this research is to establish an integrated framework for carbon footprinting (CF) at container seaports (CSs). Three methodological approaches are used in this research: the multiple case study to choose suitable evaluation methods, the case study for verification of the proposed framework, and the quantitative method to calculate the emissions. The proposed integrated framework consists of five modules: policy components, sources structure, input data, emissions estimation and mitigation strategies. The effectiveness of the integrated framework is demonstrated through the practical application in Qingdao Port in China. The case study results in the detailed estimation of CO₂ emissions and detects the problem of data collection and data accuracy for CF and the necessity of stakeholders’ cooperation. The integrated framework serves to evaluate, analyze and control CO₂ emissions from the CS operations.