在国家科技支撑计划全国警用信息基础平台应用技术研究与规模示范应用(PGIS)项目的支撑下,公安部在"金盾工程"二期中开展警用信息系统研究,并在上海市公安局PGIS平台应用示范。在应用示范项目建设过程中,针对上海大量警用信息具备时间和空间双重属性,并且随着城市变迁而快速更新的现实条件,本文提出了时空关联技术建设上海警用信息系统。本文重点研究了时空关联的警用信息系统(SPGIS)的主要特征、数据时空化处理方法、结构体系设计、数据库设计、GPS接入设计、展示方式等方面的内容。在此基础之上对上海警用信息系统从开放式架构体系、可持续的数据更新机制、数据接入时效设计、时空关系的数据挖掘等方面具体内容进行重点探讨。系统的建设成功实现了在统一的数据展示与交换平台上进行各种类型时间、空间相关数据的关联、展示、交换、共享,实现了数据的一体化管理、分析和挖掘,并于2010年上海世博安保中投入使用,为各级领导世博安保期间警务指挥决策、案事件侦办提供了有力支持。

Supported by the National Key Technology R & D Program-Police Geographic Information System Project (PGIS), Ministry of Public Secrity carried out PGIS platform study and promoted a demonstration project in Shanghai Public Secunty Bureau. Many formations of the Shanghai Public Security Bureau have both time and space attributes, and update with the rapid urban change. The common GIS technology not reflects the characteristics of the data very well. To this end, we build Police Geographic Information System base on Space-time Relationship (SPGIS).In this article we studied the six aspects of SPGIS, i.e. main features, temporal and spatial data processing method of data, architecture design, database design, GPS design, and display mode. SPGIS, based on geospatial data, adding the time dimension, to display and analysis data space attribute and time attribute, could promote people's understanding and analysis of police information. SPGIS is an open architecture system, ensures that all data can import to the system at any time through the temporal and spatial processing of data (data is processed into longitude, latitude, altitude, and time element as well). The system database also is divided into reality database, historical database, real-time database, GPS database, and so on. According to the results of this study, we completed the Shanghai Police Geographic Information System, and put into use in Expo 2010 Shanghai China. The system focuses on the open architecture system, the sustainable data update mechanism, time effectiveness of data, and data mining based on Space-time Relationship. Every type of data which include space and time attributes has been displyed,exchanged, shared and associated in a unified platform, and has been integrated to be managed, analysed and mined. During Expo 2010 Shanghai China,the system provided strong support in command and decision of police work, and in investigating of cases and events.