基于数据共享汇聚的数字月球研究

发布时间：2018-05-24 11:52

本文选题：G/S模式 + 数字月球　；参考：《成都理工大学》2013年硕士论文

【摘要】：随着地理信息技术的广泛应用，在不同的行业及领域承担着越来越重要的作用，地理信息系统所面临的问题就越来越突出。服务器端对大数据的支持不够，客户端的资源未被有效的利用等，针对上述一些问题，成都理工大学空间信息研究所提出了G/S模式，经过几年的研究与发展已经成为一个较为成熟空间数据网络访问模型，并在不同的应用中得到了验证。随着嫦娥计划的不断推进，，中国获得了一批精准有效的月球探测数据，如何科学有效的利用这些数据成为了现今研究的一大问题，为了促进月球数据的有效利用国家开展了863项目《月表形貌与月球构造的信息提取和虚拟月球环境关键技术研究》，成都理工大学空间研究所成为项目的参与者之一，申请了包括嫦娥一号及二号的数据，为进一步的研究打下了坚实的基础。为了促进月球科学数据及研究成果的共享，将国内外的月球研究数据集成到一个统一的数字月球数据共享平台已经成为一项重要的研究内容，本课题利用现有的月球探测的数据与服务、针对月球研究中数据无法集中共享、研究成果不能有效展示的问题，在G/S模式及现有数据源的基础上，研究设计基于数据共享汇聚的数字月球平台，在G/S模式的基础上设计了服务器端、客户端及数据注册中心。服务器端主要功能为数据的分布式的存储及服务的发布，客户端主要功能为服务的获取及数据的展示及分析，数据注册中心主要功能为元数据的存储与发布，并且将统一的元数据交换标准HGML利用与数字月球平台中，以实现客户端与数据注册中心的元数据交互。建立在创新型研究工作的基础上，本研究课题取得了一系列的研究成果，主要有一下三方面的内容：（1）数字月球平台的初步设计与实现在G/S模式的指导下，初步研究数字月球平台的框架，利用团队现有的技术和数据实现数字月球平台的初步设计。在毕业论文完成时可以完成一个初步的原型系统，此原型系统将成为以后研究的基础。（2）数据注册中心与月球研究数据集成按照G/S模式下的数据汇聚的思想初步设计数据注册中心，数据注册中心可以实现元数据的注册，实现数据的汇聚，数据注册中心是可扩展的，当元数据类型增多时，数据注册中心可以根据需求存储更多类型的元数据信息。当前在元数据注册中心中主要保存了三个类型的元数据,分别为数据描述元数据、服务描述元数据及状态描述元数据。（3）G/S模式下数据安全机制研究 G/S模式下数据安全非常的关键，大多数的GIS数据非常的宝贵，使用者只允许在GIS平台上使用和观测数据，不允许将缓存在本地的数据还原，这就需要在客户端进行一些加密措施，本文对加密的机制进行了一些理论性的讨论与研究。同时软件并非对大众而只是对特定的研究人员开放，所以软件本身的授权认证机制也非常关键，本课题意在提出一种软件授权认证的方案。本文的研究在多个方面具有创新性，取得了以下两点创新点：（1）提出了一种基于数据注册中心的嫦娥二号数字月球平台的实现方法本文在G/S模式的基础上提出一种基于数据注册中心的数字月球平台的实现方法，并使得该月球平台的基础数据基于嫦娥二号，通过该方法可以基本实现海量嫦娥数据的发布与共享。（2）提出了一种G/S模式下软件授权认证的方案地理信息数据涉及机密的敏感信息，做好软件的授权就十分的必要，本文提出了一种G/S模式下软件授权的解决方案，可以较好的解决软件的授权问题，可以促进G/S模式的进一步推广。
[Abstract]:With the wide application of geographic information technology, it plays a more and more important role in different industries and fields. The problems facing the GIS are becoming more and more prominent. The support of the server side to the large data is not enough, the resource of the client is not used effectively, and so on. In view of the above problems, the spatial information research of the Chengdu University of Technology The G/S model has been proposed. After several years of research and development, it has become a more mature spatial data network access model, and has been verified in different applications.
With the continuous advancement of Chang'e plan, China has obtained a number of accurate and effective lunar exploration data. How to make use of these data scientifically and effectively has become a major problem in the present study. In order to promote the effective use of the lunar data, the country has carried out the 863 project "the information extraction of the moon surface topography and the moon structure and the key to the virtual moon environment." Technology research, the Chengdu University of Technology Space Institute became one of the participants, and applied for the data of Chang'e I and No. two, which laid a solid foundation for further research.
In order to promote the sharing of lunar scientific data and research results, it has become an important research content to integrate the lunar research data at home and abroad to a unified digital lunar data sharing platform. This topic uses the data and services of the existing lunar exploration, and the data can not be shared in the lunar research, and the research results are not. On the basis of the G/S model and the existing data sources, the digital moon platform based on data sharing is designed and designed on the basis of the existing data sources. On the basis of the G/S model, the server side, the client and the data registration center are designed. The main functions of the server are the distributed storage and service release of the data, the main functions of the client. In order to obtain and analyze the service and data, the main function of the data registration center is the storage and release of metadata, and the unified metadata exchange standard HGML is used in the digital moon platform to realize the interaction between the client and the data registration center.
On the basis of innovative research work, a series of research achievements have been achieved in this study. There are three main contents:
(1) preliminary design and implementation of the digital lunar platform
Under the guidance of the G/S model, the framework of the digital lunar platform is preliminarily studied, and the preliminary design of the digital lunar platform is implemented using the existing technology and data of the team. A preliminary prototype system can be completed when the graduation thesis is completed. This prototype system will be the basis for future research.
(2) integration of data registration center with lunar research data
According to the idea of data aggregation under the G/S model, the data registration center can be designed. The data registration center can realize the registration of metadata, and the data registration center is extensible. When the metadata type increases, the data registration center can store more types of metadata information according to the requirements. The registry mainly preserves three types of metadata, namely data description metadata, service description metadata and state description metadata.
(3) research on data security mechanism under G/S mode
Data security is very important in G/S mode, and most of the GIS data are very valuable. Users only allow the use and observation of data on the GIS platform, and do not allow the cache to restore the local data. This requires some encryption measures on the client side. This paper has carried out some theoretical discussion and Research on the encrypted machine system. Software is not open to the public but only to specific researchers, so the authentication mechanism of the software itself is also very critical. This lesson is intended to propose a program of software authorization authentication.
The research in this paper is innovative in many aspects. Two innovations have been achieved:
(1) a method of realizing the lunar platform based on data registry is put forward for Chang'e two.
On the basis of G/S model, this paper proposes a digital lunar platform based on data registration center, and makes the basic data of the lunar platform based on Chang'e two. Through this method, we can basically realize the publication and sharing of massive Chang'e data.
(2) put forward a scheme of software authorization authentication under G/S mode.
Geographic information data involves sensitive and sensitive information, so it is necessary to do software authorization. In this paper, a solution of software authorization under G/S mode is proposed, which can better solve the authorization problem of software and promote the further extension of G/S model.
【学位授予单位】：成都理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P184;TP311.52

【参考文献】