基于Linux3S的土地基础信息采集技术

针对现有土地基础信息获取手段存在的一些缺陷，提出基于Lin“平台的、结合3S技术的土地基础信息采集方法。采用以Linux平台为核心，设计具有自主知识产权的嵌入式GIS模块，为适应在掌上电脑中使用，提出四叉树——双缓冲存取模式，以提高电子地图显示速度，利用四叉树分割法，实现大型底图显示，集成上层土地管理软件，实现土地基础数据采集。该技术在示范应用中实现取得良好效果，证明了该技术的有效性。

Technique of Basic Land Information Acquirement Based on Linux 3S

Aiming at the shortcomings of basic land information acquirement methods, this paper puts forward the basic land information acquirement technique based on Linux and combines 3S technique. It takes Linux as core and designs an embedded GIS module with intellectual property, in order to fit the use in the palmtop, it proposes a quadtrees-dual buffer access module to improve the electron map showing rate. Making use of quadtrees, it achieves large-scale base map vision. Through integrating land management software, it achieves the data collection. The technique is proved the availability, which is successfully applied with good result.