顾桥矿区GPS基准网高程系统转换研究

Study for the Height System Transformation of the GPS Network in Guqiao Coal Mine

在介绍顾桥矿区GPS平面基准网和三等水准高程基准网的数据处理和精度评价概况的基础上,根据水准联测点的高程异常,分析了测区的高程异常面形态,建立了基于多面函数的高程异常面的数学模型,实现了高程系统的转换。通过分析,所选择的数学模型适合于整个测区,转换后的GPS水准达到了三等水准的精度要求。

Based on introducing the overviews of the data processing and accuracy assessing for the GPS plane datum network and the third order level height datum network in GuQiao Coal Mine, according to the height anomalys of the level joint points, the height anomaly curve is analyzed, the mathematic model based on the multi-curve function for the height anomaly curve is established, and the height system transformation is realized. By analyzing the results, the selective mathematic model fits for the whole survey area, the transformed GPS level meets the accuracy requirement of the third order level.