RTK是能够在野外实时得到厘米级定位精度的测量方法，它采用了载波相位动态实时差分方法，它的出现在工程放样、地形测图，各种控制测量等测量工作中，极大地提高了外业作业效率。根据笔者多年测量经验，地形测图方面采用的方法：运用实时动态（RTK）测量技术，结合南方数码公司“工程之星3．0”软件，采用清华三维编码、简码方式采集野外数据，用VB小程序进行数据格式转换，在“南方CASS7．0成图系统”软件，展现数字化地形图。%RTK is able to in the field of real-time cm level positioning precision measurement method, which uses the carrier phase dynamic real time difference method, is the GPS application major milepost, it is project lofting, topo- graphic mapping ,various control measurement brings new dawn, greatly improves the work efficiency and industry. Ac- cording to the writer's many years experience of measurement, topographic mapping the method in use:the use of real- time dynamic (RTK) measurement technology, combined with the digital company "Project Star 3.0" software, adopt three-dimensional coding, code the collection of field data, using vb small program for data format conversion, in the " Southern CASS7.0 mapping system" software display,digital topographic map.
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