GPS技术在桥梁平面控制测量中的应用

Application of GPS Technique in Bridge Control Survey in Plane

针对现阶段GPS技术在平面控制方面具有较高的精度,该文叙述了GPS数据处理的一般过程,着重介绍了GPS网平差方面的二维平差功能。并结合某桥梁布设首级控制网的具体实例,详述了平面控制点从GPS实测的坐标到工程坐标系中的坐标的转化过程,具有一定的实际应用意义。

According to the high accuracy of the GPS technique in the plane control survey, this paper disscusses the general process of GPS data and especially introduces the two-dimensional adjustment function in GPS network adjustment. Combined with specific example by construction of the first control network for a brige,it describes the transformation of the plane control points from the measured coordinate by GPS to the engineering coordinate, and it has certain practical significance.