Coordinate Datum Unification for Regional CORS Network Combination
Yuan Pen · 2014
In order to prevent the gaps in coordinate datum between different regional continuously operating reference systems(CORS),we analyze the causes and introduce a method for coordinate datum unification.Using experimental data from the Hubei and Hunan CORS,the results show that the systematic deviation reaches 17.9±4.5mm between these two datums.The proposed method establishes a unified coordinate datum to eliminate the systematic deviation and builds connections between each coordinate datum.The validity of our method was supported by empirical evidence.Finally, some suggestions about coordinate datum unification for a regional CORS network combination are put forward.