GPS单点校正精度分析及在公路工程中的应用

Accuracy Analysis of Trimble GPS Single Point Correction and Its Application in Highway Engineering

GPS-RTK技术在工程应用中起到极大的助力作用,解决了传统测绘技术的难题。GPS-RTK技术在使用中为了保证足够的精度及通信距离,一般要进行多点校正,并且在使用中通信距离不大于10km。这就导致在施工过程中,要付出大量的精力进行点校正和挪动基准站。通过单点校正技术和传统RTK技术进行对比,发现利用CORS网及单点校正技术相结合,可以大大提高工程测量的工作效率。并且在公路工程中,可以解决长大线路基站通信信号有限的弊端。

GPS-RTK technology plays a great role in engineering application,and solves the problem of traditional surveying and mapping technology.The GPS-RTK technology is used to ensure sufficient accuracy and communication distance,generally,multi-point correction is required,and the communication distance in use is not more than 10km.This leads to the construction process,to pay a lot of energy for calibration and moving the reference station.By comparing the single point calibration technique with the traditional RTK technique,it is found that the combination of CORS network and single point calibration technique can greatly improve the work efficiency of engineering measurement.And in highway engineering,it can solve the problem of limited communication signal of long line base station.