NB南京市规划局测绘标准NJCHXXX南京城市三维地理信息模型数据标准（征求意见稿）2014-12-31发布2015-01-01实施南京市规划局发布南京市测绘管理办公室目录1范围................................................................................................................................................................12编制原则.........................................................................................................................................................12.1先进性.....................................................................................................................................................12.2可操作性.................................................................................................................................................12.3扩展性.....................................................................................................................................................13规范性引用文件.............................................................................................................................................14术语和定义.....................................................................................................................................................25缩略语............................................................................................................................................................46基本规定.........................................................................................................................................................46.1空间参考系..............................................................................................................................................46.2时间参考系..............................................................................................................................................46.3建模单元划分..........................................................................................................................................46.4数据格式.................................................................................................................................................46.5模型数学精度..........................................................................................................................................47三维地理信息模型内容及表现.....................................................................................................................57.1模型内容.................................................................................................................................................57.2表现方式.................................................................................................................................................67.3模型分级.................................................................................................................................................77.4模型精细度..............................................................................................................................................77.5模型属性规定........................................................................................................................................137.6元数据要求..........................
