Study for the Height System Transformation of the GPS Network in Guqiao Coal Mine
Zheng Xiu-an · Surveying and mapping · 2010
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.