<論文>ポータブルGPS受信機によるDGPS測位評価 <PAPRE>DGPS Measurement Evaluation by Portable GPS receiver

This paper is the result of DGPS observations performed by using a portable GPS receiver for point positioning. Point positioning and DGPS (Differential Global Positioning System) were performed with a pentagonal observation shape, and then compared these positioning errors. The error of point positioning was about 25m. The error of DGPS decreased in comparison with the error of the point positioning by about 10%. A differential effect appeared on this result as well. The error of this size can be used for practice at school. It was proved that it was suitable for the surveying practice of school in the DGPS observation which a portable GPS receiver was used.