文档介绍：i摘要数字化地形图点位精度高、改进了作业方式、加强了地图表现力,数字化测图是现在最实用、普及的一种测图方法。程庄地形图的测绘也就是用了数字化测图的方法。在下面介绍的测图过程中,我们重点介绍了前期的GPS的控制测量、、绘制地形图、图形整饰等。还有我在测图过程中总结的一些心得,也写出来跟大家一起分享。关键词:数字化地形图;全站仪、GPS;程庄;:Thedigitizedtopographicdiagrampositionprecisionhigh,improvestheworkway,strengthenedthemapexpressiveforce,thedigitizedmappingisthepresentismostpractical,,weintroducedwithemphasisearlierperiodGPScontrolsurvey,theentirestationmeterpacesoffthequantitygarrulouslyaswellasunfoldsthespot,theplantopographicdiagram,,:Digitizedtopographicdiagram;Entirestationmeter,GPS;ChengZhuang;:............................................................................................1关键词:............................................................................................1第一章测区概况............................................................................1第二章测区已有测量基本情况....................................................2第一节测区平面控制情况..................................................................................2第二节测区高程控制情况....................................................................................2第三节测区现有地形图情况................................................................................2第三章控制测量............................................................................2第一节基本知识介绍..........................................................................................3第二节基本控制测量..........................................................................................8一、GPS控制点的选择与埋设.......................................................................8二、GPS控制测量的技术要求.......................................................................9三、GPS外业实施.........................