矿区GPS网坐标转换的抗差模型

Study on Robust Estimation Model for Coordinate Transformation of GPS Network in Mining Areas

采用高崩溃污染率抗差估计方法，将ＧＰＳ网由ＷＧＳ－８４坐标系下的坐标转换成局部坐标系下的坐标，从而不仅能识别不稳定的基准点，而且能对其形变的大小作出近于实际的估计，保证了转换后ＧＰＳ网的精度及转换坐标的正确性．当基准点中没有粗差时，与最小二乘法的结果一致．最后。

A high breakdown contaminated robust estimation model is applied to the transformation of coordinates in GPS network from WGS 84 system to local plane system. It can not only discover moved reference points and determine the points for computing transformation parameters, but also evaluate the deformation values of the points. So the model can provide reliable and accurate results of coordinate transformation and data processing. The results computed by this model are consistent with those of least square method when there are no gross errors in reference points.