Analysis of the Influence Prior Coordinates and Design Points Translation to the Accuracy of GPS Control Network

This paper calculates GPS control network from different accuracy of prior coordinates, inspects the accuracy influence of the prior coordinates to final adjustment with coordinate after the precision of the unknown point coordinates, analyzes and summarizes the importance of the prior coordinates in the calculating of the whole GPS control network data. Through the translation of the simulation design GPS point, this paper tests the effects of the baseline length and the direction of change on the accuracy of the reliability of the whole network.