县级资源环境数据库建设的技术方法

航空遥感和航天遥感在数据库建设中分别用于获取状态数据和确定变更靶区 ,而全球定位系统用于靶区的准确定位。该文阐述选择GPS机型的几个条件、GPS基准站设立的两个方法并明确了GPS测量方法。GPS数据在进入数据库之前要基于GPS数据处理软件和传统GIS进行数据转换和编辑。说明基于时空地理实体建立一个本质为TGIS的县级资源环境数据库及其完备的时、空、属性查询特点。同时结合空间信息技术的最新发展探讨县级资源环境数据库建设技术路线的发展趋势。

Methodology of Building Resource-Environment Database at County Level

Requirements for selecting GPS receiver, two methods for building GPS base station, and the surveying method of GPS are expounded. And GPS data must be transferred and edited based on GPS and traditional GIS software before entering database. It also is introduced in detail how to build a resource-environment database with the essence of TGIS and completely temporal, spatial and thematic queries characteristics based on temporal-spatial geographical entity. Combining the latest development of spatial information sciences, the change of methodology about building resource-environment database at county level is discussed as well.