常规控制测量与GPS控制测量点位精度比较分析

应用测量误差的基本理论,通过实际观测对常规控制测量和GPS控制测量进行精度分析与比较,二者在平面控制测量方面精度相当,而在高程控制测量方面,水准测量的精度略高于GPS高程控制测量。建议在控制测量中,运用GPS定位技术与常规控制测量技术联合测量的方法,得到高精度的控制点三维坐标成果。

Precision Comparing between Common Control Survey and GPS Control Survey

Control Survey is the basis of measurement; measurement work must follow the principle of control before detail survey. The precision of control points directly affects the accuracy of detail survey and construction measurement. According to the basic theory of measurement deviation and through actual observations, this paper compares and analyzes the precision of conventional control survey and GPS control survey. It turns out the accuracyies of the two survey methods are equivalent on plane control survey; while as for the elevation control survey, the precision of leveling survey is higher than that of GPS control survey. In view of that, this paper proposes to apply joint survey method combining GPS technology with conventional measurement technology on control survey, so as to obtain highly precise 3-D coordinates outcome of the control points.