基于Flex的通航飞行服务WebGIS设计与实现

发布时间：2018-10-11 19:12

【摘要】：随着我国低空空域的逐步开放,通航飞行服务站作为低空飞行服务保障体系的重要组成部分,其功能及效率直接影响着通航用户获取飞行服务的质量。而通航飞行服务信息综合显示对通航飞行服务站来说尤为重要。Flex作为当前富客户端互联网技术的突出者,不仅具有B/S模式的部署灵活还具有C/S模式的交互体验丰富等优势,能平衡客户端与服务端的负载,界面华丽,交互性强。将Flex技术应用于通航飞行服务WebGIS,可以全面而清晰的显示飞行服务信息,方便飞行服务讲解员快速掌握和理解飞行服务相关信息,提高讲解员的工作效率。本文主要研究了利用Flex技术搭建WebGIS系统平台,以及该系统开发的关键技术,最终利用该框架搭建了通航飞行服务系统平台。具体主要做了以下工作:第一,根据Flex技术和ArcGIS平台,分析了基于ArcGIS API for Flex构建WebGIS框架的实现方法和技术细节,比如采用地图服务缓存技术与对象池策略,不仅缩短地图服务的响应时间,同时优化了系统的整体性能;选择按需加载模块开发,节省了系统资源;提出Flex安全沙箱限制的问题和解决方案。第二,构建系统框架,包括客户端,应用服务端和数据服务端的设计与实现。客户端利用Flex技术在Flex Viewer框架下进行二次开发,客户端与服务端采用RemoteObject的通讯方式,通过REST API调用地图服务。说明航迹信息和气象信息的存储与读取方式。第三,搭建了低空飞行服务系统平台,根据通航飞行服务的需求设计并实现了航迹信息的监控,气象信息的查询,以及各个工具类模块的功能,直观地展示了Flex在构建通航飞行服务WebGIS的可行性和优越性。
[Abstract]:With the gradual opening of low-altitude airspace in China, navigable Flying Service Station, as an important part of low-altitude flight service support system, its function and efficiency directly affect the quality of navigation users to obtain flight services. The integrated display of navigable flight service information is especially important for the navigation flying service station. As a prominent user of the current rich client Internet technology, Flex not only has the advantages of flexible deployment of the B / S mode, but also has the advantage of rich interactive experience of the C / S mode. Can balance the client and server load, interface gorgeous, interactive strong. The application of Flex technology to navigable flight service WebGIS, can display the flight service information completely and clearly, facilitate the flight service interpreter to grasp and understand the flight service information quickly, and improve the work efficiency of the interpreter. This paper mainly studies the WebGIS system platform based on Flex technology, and the key technology of the system development. Finally, the navigable flight service system platform is built by using this framework. The main works are as follows: first, according to Flex technology and ArcGIS platform, this paper analyzes the implementation method and technical details of building WebGIS framework based on ArcGIS API for Flex, such as using map service caching technology and object pool strategy. It not only shortens the response time of the map service, but also optimizes the overall performance of the system; selects the on-demand loading module to save the system resources; and puts forward the problem and solution of Flex security sandbox restriction. Second, build the system framework, including client, application server and data server design and implementation. The client uses the Flex technology to carry on the secondary development under the Flex Viewer frame, the client and the service end adopt the RemoteObject communication way, through the REST API calls the map service. The storage and reading mode of track information and meteorological information are described. Thirdly, the low altitude flight service system platform is built. According to the requirements of navigable flight service, track information monitoring, meteorological information query, and the functions of each tool module are designed and realized. The feasibility and superiority of Flex in the construction of navigable flight service WebGIS are demonstrated intuitively.
【学位授予单位】：哈尔滨工程大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：P208;V35;TP393.09

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