公安业务地理信息关联采集方式的研究

地理信息采集是各类业务GIS的基础工作,公安业务地理信息采集常常采用人工地图标注模式进行。公安业务地理信息分为独立业务地理信息和带关联信息的业务地理信息,通过分析带关联信息的业务地理信息的特点,提出主图层、子图层等概念。人工地图采集方式分为:常规独立采集方式和关联采集方式。常规的独立采集方式缺乏关联性,容易重复采集,而关联采集方式既可以保证同一空间位置的多类信息在坐标描述上的绝对一致性,以及其属性之间的传承关系,又可以实现多类信息之间的精确指定关联采集。最后,进行了业务地理信息关联采集方式的流程研究、数据模型研究与功能实现。结果表明,通过这种关联采集方式,极大地减轻了公安行业人工地图采集的工作量,并能使公安业务地理信息之间的关联性清晰化、精确化,满足了公安业务中大量存在的地理信息采集、管理需求。

A Study on Data Association Acquisition about Geographical Information for Public Security Service

Geographic data collection is very basal and important for GIS.Some specialized data,such as cases,warning instances and so on,can＇t be collected by remote sensing,map digitization or other general geographic data acquisition method,and many public security service information collection methods about spatial locations don＇t require the accuracy as the same as the professional surveying and mapping.So,these data are collected usually through labeling on electronic map manually.However,the general manual collecting methods manage the geographic information independently,lacking of correlation and inheritance.Because public security service information and the management method about these data are multiform,and there are high correlation and strong artificially specified relationship between many data,research on a new manual acquisition mode about geographic data is particularly necessary.According to the business characteristics and the acquisition mode,public security service information is divided into independent information and information with associated data.So the concept about main layer and sub-layer is presented,and a method about geographic information association acquisition based on the electronic map manually is researched.Not only can this method ensure many geographic data which have the same spatial location are the same coordinate in the memory and the inheritance of the properties,but also get certain accuracy and realize specified association between many geographic data.This association acquisition method can greatly reduce the workload in the manual data acquisition,make the association relationship between the data more clear and accurate,and meet the geographic data collection,management needs in public security bureau.