双基站双采样RTK测量在布设一级导线中的应用

通过对RTK测量工作原理的分析，得出单基站单采样RTK测量方法在实际应用中的缺点，从而提出了双基站双采样的测量方法，并在天津临港工业区测量项目中进行了实际应用。通过该项目测量成果，分析了采用双基站双采样的RTK测量方法，可有效消除基准站坐标误差对采样点平面坐标的系统影响，消弱对流层随机变化对RTK高程测量的影响，从而使RTK平面坐标测量满足城市一级导线测量的需要，使RTK高程测量接近或达到四等水准测量的精度。

Application of Double- station- double- sampling RTK Surveying inOne- level Traversing

Through the analysis of RTK working principle,the shortcoming of single-station-single-sampling RTK surveying in practical application is known,so a new method of double-station-double-sampling is proposed.Through a example of RTK surveying in Tianjin near port industrial district,explaining that the affection produced by base station coordinate error to the plane coordinate of measure point and the affection produced by stochastic change of Troposphere to the RTK elevation surveying can be eliminated effectively.So use the new method of double-station-double-sampling,the precision of RTK plane coordinate surveying in city's one-level traversing and precision of RTK elevation surveying in fourth order leveling can satisfy the requirement.