This paper expound the basical theory of RTK and the process of RTK in the tubing line survey .At the same time ,in the example of XQDS ,elaborate the application of RTK in the tubing line survey.

• 本文阐述了RTK(实时动态差分定位)技术的基本原理及流程,并以西气东输输气管线中的测量为例,概括叙述RTK技术在管道线路测量中的应用。