The general situation of Railway GIS (RGIS) as well as it's goal and difficulty is introduced firstly in this thesis.
本文介绍了目前铁路地理信息系统(RGIS)的建设现状，对RGIS总体目标与建设中难点进行了讨论。
In the study of GIS, there are three models: Monitor and Discover Service (MDS), the Relational Grid Monitoring Architecture (R-GMA) and RGIS.
在对网格信息服务的研究中涌现出了很多模型，本文主要介绍了三个模型：MDS、RGIS和R - GMA。
Research purposes: Based on RGIS application project, the purposes were to solve key (demands) of railway Orbit, such as precision, visualization.
研究目的：课题基于GIS应用项目，旨在解决铁路轨道精确、直观、可视表达等核心需求。
Research purposes: Based on RGIS application project, the purposes were to solve key (demands) of railway Orbit, such as precision, visualization.
研究目的：课题基于GIS应用项目，旨在解决铁路轨道精确、直观、可视表达等核心需求。
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