基于AutoCAD和RTK的地形图数学精度检测  

Accuracy Assessment of Digital Topographic Map Based on AutoCAD and RTK

作　　者：伍素贞 方子岩[2] 莫志恒 

机构地区：[1]广东省地质测绘院,广东广州510800 [2]东南大学,江苏南京210096 [3]深圳岩土综合勘察设计有限公司,广东深圳518172

出　　处：《测绘与空间地理信息》2012年第3期187-189,193,共4页Geomatics & Spatial Information Technology

摘　　要：当对一个较大测区用全站仪或摄影测量方法测绘某种比例尺地形图时,可获得数量较多的地形图。对获取的数字地形图进行精度评定,是质量检查中的一个重要环节,而且工作量较大。AutoCAD为平台开发的测图软件在测绘行业十分流行,测绘行业生产的数字地图一般都能转化为DWG格式。对于DWG格式的地形图,在AutoCAD打开的图上拾取若干地物点,并把这些点的坐标自动形成一个坐标文件,与外业测量仪器RTK采集相应点形成的坐标文件,通过精度评定程序进行同名点号的坐标值对比,获得数字地形图数学精度,大大提高了数字地图精度检测工作的效率。When mapping a larger area of certain scale by using total station or the photographic measurement, a large number of topographic maps can be acquired, and therefore the accuracy assessment of the acquired digital topographic map becomes an important step of the quality check which takes much work. AutoCAD which serves as a platform for the development of mapping software is very popular in the mapping industry and the digital maps can usually be converted to DWG format. For the topographic maps of DWF format, the map accuracy can be assessed by comparing the coordinates formed by collected points on AutoCAD and the ones produced by RTK, and the efficiency can be thus improved greatly.

关 键 词：精度评定 AUTOCAD DWG格式 LISP语言 拾取点坐标 坐标文件 RTK采集检查点坐标 

分 类 号：P217[天文地球—测绘科学与技术]