【摘要】 针对GPS(全球卫星定位系统)单独定位系统存在的缺陷,对GPS与地理空间信息系统GIS相结合的铁路列车定位的工作原理、铁路GIS地图数据库的建立、GPS与GIS间的接口、GPS坐标与数字地图强制匹配的算法及GIS距离推算等问题做了初步阐述。更多还原

【Abstract】 Regarding the limitations of Global Position System (GPS) in singlepositioning, the paper gives an elementary description to the operating philosophyof GPS and GIS (Geographical Information System) integrated train positioning,the establishment of map database for railway GIS, the interface between GPSand GIS, the arithmetic of compulsive matching between GPS coordinate anddigital map as well as the calculation of distance in GIS, etc.更多还原