警用GPS应用系统关键技术研究

发布时间：2019-04-04 20:21

【摘要】：GPS系统是警用地理信息（PGIS）应用的非常重要的一个基础条件，基于电子地图与GPS定位数据的业务应用又是PGIS最重要的应用方向。由于公安实战的需要，GPS应用系统在指挥调度、勤务管理、交通安全管理、大型活动安保等业务领域能够发挥重要的作用。当前公安GPS应用中的有大量GPS设备接入并同时上传定位信息，，大量监控客户端需同时查看，定位频率非常高，定位信息显示实时要求高，如何解决这种海量信息实时分发和显示存在的问题，是重点需要解决的问题。对GPS应用系统中的关键技术进行研究，不仅能服务于公安行业，也能给交通管理等其它行业的GPS应用系统解决方案借鉴。为了满足公安工作对GPS应用系统在实时性、海量消息传递、海量动态数据显示等方面的要求，本课题重点在海量信息分发和海量信息显示两个方面的技术进行研究，关键技术包括：采用异步通信机制提高节点负载能力；采用多级分发机制提高系统吞吐量；采用订阅机制减少数据分发量；采用分层独立缓存机制和批量刷新机制来减少地图数据的绘制工作量，提高显示性能。论文的成果在实际的工程应用发挥作用，并经受了大型活动安保等应用考验。具体的软件成果实现了一个灵活的、可扩展性的整体系统结构；能兼容多厂家设备、不同传输通道的定位信息接入；解决了实际工程中大量定位信息传输入与显示存在的性能问题。
[Abstract]:GPS system is a very important basic condition for the application of (PGIS) for police geographic information. The business application based on electronic map and GPS positioning data is also the most important application direction of PGIS. Due to the need of public security, GPS application system can play an important role in the fields of command and dispatch, service management, traffic safety management, large-scale event security and so on. At present, there are a large number of GPS devices accessing and uploading positioning information in public security GPS applications, a large number of monitoring clients need to check at the same time, the positioning frequency is very high, and the real-time requirement of positioning information display is high. How to solve the problems existing in the real-time distribution and display of this massive information is the key problem to be solved. The research on the key technology of GPS application system can not only serve the public security industry, but also give reference to the solution of GPS application system in other industries, such as traffic management. In order to meet the requirements of public security work in real-time, mass message transmission, mass dynamic data display and other aspects of GPS application system, this subject focuses on the technology of mass information distribution and mass information display. The key technologies include: adopting asynchronous communication mechanism to improve the load capacity of nodes; The multi-level distribution mechanism is used to improve the system throughput, the subscription mechanism is used to reduce the amount of data distribution, and the hierarchical independent caching mechanism and batch refresh mechanism are used to reduce the map data rendering workload and improve the display performance. The results of this paper play an important role in practical engineering application, and have withstood the application test of large-scale event security and so on. The concrete software achievement realizes a flexible and expandable whole system structure, which can be compatible with multi-manufacturer equipment and different transmission channels for positioning information access. The performance problem of transmission and display of a large amount of positioning information in practical engineering is solved.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P228.4

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