A New GPS Data Collecting Method Based on Connection-control Point Correction

Abstract

The connection-control point correction and loop positioning correction method are used to collect GPS data in the paper, which can reduce the error caused by data drift. Based on the topological structure characteristics of the track traffic station, the method is used to adjust the collecting GPS data by the constraint of some connection points and control points, which accurate coordinate are known. Field experiments show that there are more accurate GPS data collected in the connection-control point correction with GPS acquisition accuracy improved by 82%, and it is conducive to the realization of accurate GPS positioning.