통행차량에 대한 GPS수신자료의 정확도에 관한 연구 = A Study on the Accuracy of GPS Received Data in Travel Vehicle

다국어 초록 (Multilingual Abstract)

The introduction of GPS technique in transportation study make real time tracking of driving vehicle`s position possible. Position information data gauged with three dimension(X, Y, Z) can be achieved with time-continuity and from more than two driving vehicles. For this field of study, in past day, there were many difficulties in collecting real time data, but now, it becomes easy thanks to this. But for the resonable result analysis, fully understanding of GPS data-accuracy must be proceeded. Because accompanied magnitude of error depends on the study`s accuracy. For this reason, this study surveyed the GPS data`s error and suggest calibrate technique. This study`s result will be helpful for following studies using DGPS data. For this, this study takes two types study in road, and set triangulation coordinates, and compare it with GPS data. DGPS data contains less than 0.6m`s error.