地理信息服务聚合技术研究

发布时间：2019-03-14 17:45

【摘要】：随着地理信息应用不断深入，人们使用地理信息服务的方式和频率正在发生巨大变化。长期以来，测绘部门主要以离线方式提供基础地理数据，无法满足人们对地理信息快速获取与集成应用的要求。针对这些应用需求，国家、省、市州测绘部门已开始建设各个层次的地理信息公共服务平台，各专业部门也开始建设专业信息资源服务平台。在地理信息应用方面，横向包括交通专业服务、水利专业服务、国土专业服务等，纵向有国家、省、市州的地理信息服务，不同服务之间数据结构复杂。在此背景下，研究异构平台之间服务的聚合，实现对异构服务的综合调度与聚合，能有效促进地理信息资源的共享与高效利用。针对地理信息服务多源、异构的特点，本文重点研究基于“天地图”的地理信息服务聚合技术，对服务群与元服务的信息描述，服务聚合软件架构设计以及服务聚合系统实现三方面进行深入研究，本文主要研究内容和成果如下：（1）服务描述标准研究。对各种异构地理信息服务进行研究，提出服务描述的基本要求：服务群表示为一个7元组（ID，Name，Description，Operation，Input，Output，Capability），元服务表示为一个8元组（ID，Name，SGID，Description，Url，Token，Range，Qos），设计服务发布与注册模块数据库，为服务注册，服务发现及服务调用提供支撑。（2）地理信息服务聚合软件架构设计。引入服务群的思想，设计基于“天地图”的地理信息服务聚合软件架构，同时，设计了服务注册与目录发布，服务调度与聚合，聚合服务发布与管理等功能模块。（3）服务聚合软件系统研发。根据地理信息服务聚合软件架构总体设计，实现地理信息服务聚合软件系统研发。该系统实现了瓦片地图服务聚合、路径分析服务聚合与地名搜索服务聚合等功能。功能测试通过率为74.63%，性能方面，事物响应不超过18秒，，安全测试完全通过。测试结果表明，系统开发满足用户需求与设计要求。
[Abstract]:With the deepening of the application of geographic information, the way and frequency of using geographic information service are changing greatly. For a long time, surveying and mapping department mainly provides basic geographic data by off-line mode, which can not meet the requirement of rapid acquisition and integrated application of geographic information. In view of these application requirements, national, provincial and municipal surveying and mapping departments have begun to build various levels of geographic information public service platform, professional departments have also begun to build professional information resources service platform. In the aspect of geographic information application, it includes transportation professional service, water conservancy professional service, territorial professional service and so on. There are national, provincial and municipal geographic information services in longitudinal direction. The data structure between different services is complicated. Under this background, it can effectively promote the sharing and efficient utilization of geographic information resources by researching the aggregation of services between heterogeneous platforms and realizing the comprehensive scheduling and aggregation of heterogeneous services. In view of the characteristics of multi-source and heterogeneous geographic information services, this paper focuses on the aggregation technology of geographic information services based on "Sky Map", and describes the information of service groups and meta-services. The architecture design of service aggregation software and the implementation of service aggregation system are studied in depth. The main contents and achievements of this paper are as follows: (1) Service description standards. Based on the research of various heterogeneous geographic information services, the basic requirements of service description are put forward: the service group is represented as a 7-tuple (ID,Name,Description,Operation,Input,Output,Capability) and the meta-service is represented as an 8-tuple (ID,Name,SGID,Description,Url,). Token,Range,Qos), designed service publishing and registration module database to provide support for service registration, service discovery and service invocation. (2) the architecture design of geographic information service aggregation software. The concept of service group is introduced to design the architecture of geographic information service aggregation software based on "Sky Map". At the same time, the function modules such as service registration and directory publishing, service scheduling and aggregation, aggregation service publishing and management are designed. (3) Research and development of service aggregation software system. According to the overall design of geographic information service aggregation software architecture, the research and development of geographic information service aggregation software system is realized. The system realizes the functions of tile map service aggregation, path analysis service aggregation and place name search service aggregation. The function test pass rate is 74.63%, the performance aspect, the thing response does not exceed 18 seconds, the safety test passes completely. The test results show that the system development meets the needs of users and design requirements.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P208

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