ICS07.040 CCSA75 DB50 重庆市地方标准 DB50/T1643—2024 1：500地形图倾斜摄影及机载三维激光扫 描测绘技术规程 2024-07-15发布 2024-10-15实施 重庆市市场监督管理局发布DB50/T1643-2024 I目  次 前言...............................................................................................................................................................I 1范围.........................................................................................................................................................1 2规范性引用文件....................................................................................................................................1 3术语和定义.............................................................................................................................................1 4基本要求.................................................................................................................................................2 4.1测绘方式.........................................................................................................................................2 4.2技术流程.........................................................................................................................................2 4.3成果类型及格式.............................................................................................................................2 4.4测量基准.........................................................................................................................................2 4.5投影方式.........................................................................................................................................2 4.6产品分幅与编号.............................................................................................................................2 4.7精度指标.........................................................................................................................................2 4.8资料收集.........................................................................................................................................3 4.9仪器设备.........................................................................................................................................4 5控制测量.................................................................................................................................................4 5.1一般规定.........................................................................................................................................4 5.2平面控制测量.................................................................................................................................4 5.3高程控制测量.................................................................................................................................5 6倾斜摄影数据获取与实景三维模型制作............................................................................................5 6.1航摄计划与航摄设计.....................................................................................................................5 6.2航摄实施.........................................................................................................................................5 6.3像控点布设与测量.........................................................................................................................5 6.4空中三角测量.................................................................................................................................5 6.5实景三维模型制作.........................................................................................................................6 7三维激光点云数据获取与处理............................................................................................................6 7.1三维激光点云密度.........................................................................................................................6 7.2三维激光点云重叠度.....................................................................................................................6 7.3坐标系统转换................................