城市控制网布设中多基站RTK测量方法

Application of Multi-station RTK Surveying in City's Control Network Construction

单基站RTK测量工作很可能产生系统性误差,为解决此缺点,笔者尝试利用多基站多采样的测量方法,并在工程项目中验证,通过平差数据分析,表明可有效削弱基准站坐标误差对RTK采样点平面坐标的系统影响,同时证明可有效削弱对流层随机变化对RTK高程测量的影响,从而满足城市控制网快速布设的需求,使内插平差计算的RTK高程测量接近或达到四等水准测量的精度。

Through the analysis of RTK working principle,the shortcoming of single-station RTK surveying in practical application is easy to cause systematic errors.In order to overcome the shortcoming,a new method of multi-station and multi-sampling RTK surveying is proposed.Through an example of RTK surveying in engineering,it showed that the affect produced by base station coordinate error to the plane coordinate of measure point and affect produced by stochastic change of Troposphere to the RTK elevation surveying can be eliminated effectively.Therefore,using the new method of multi-station RTK,it can meet the requirement of urban control network construction,and the precision of RTK elevation surveying is close to fourth order leveling.