顾桥煤矿GPS基准网坐标转换的高崩溃污染率抗差估计

为确保顾桥煤矿D级GPS平面基准网坐标系统转换后的质量,克服转换基准点中存在的位移对转换成果的影响,基于高崩溃污染率抗差估计理论,建立了坐标系统转换参数的估计模型及转换后GPS网的质量评价模型。顾桥煤矿D级GPS网转换后的成果表明,高崩溃污染率抗差估计能够实现平差系统对存在位移的转换基准点进行自动准确探测的目的,保留了GPS技术高精度的特点,为该矿区建立了可靠的测绘基准。

Robust Estimation with High Breakdown Contamination Rate for the Coordinate Transformation of GPS Datum Network in Guqiao Coalmine

In order to ensure the quality of the plane coordinate system transformation for the GPS plane datum network with D rank in Guqiao Coalmine,and eliminate the impact of the displacements existed in the transformation reference points on the transformed results,and based on the robust estimation theory with high breakdown contamination rate,the estimation model for the coordinate transformation parameters and the quality evaluation model for transformed GPS network are established in the paper.The transformed results of the GPS datum network with D rank in Guqiao Coalmine show that the robust estimation with high breakdown contamination rate can detect the transformation reference points with displacements automatically and accurately, and the high precision characteristics of GPS technology is reserved,and the reliable surveying datum in Guqiao Coalmine is established.