GPS KINEMATIC for CALCULATION of GEOID UNDULATION IN SULAWESI

摘要

The use of GPS is increase in the last past year in all aspect of live. The disadvantage of using GPS is the height information not the actual height. To convert it to actual height is needed geoid undulation. In 2008 Adolfientje Kasenda has provided the Gravity data using airborne gravimetric. The survey used the GPS kinematic positioning to determine the coordinate in the plane which use for the position of the gravity data. The position of the gravity data was calculated from these GPS kinematic positioning with used of Bernese 5.0 GPS software. The program that used to calculate the coordinate is CODSPP and GPSEST with use zero difference. In CODSPP it had a RMS from 0.000 to 8.096 in X component, from 0.000 to 9.589 in Y component and from 0.000 to 5.317 in Z component. And in GPSEST it had a RMS from -1.874 to 0.994 in X component, from -2.104 to 5.906 in Y component and from 0.049 to 5.464 in Z component. Seen from the value of RMS of the coordinate from both program - The result of both program can be used as the coordinate of the airborne gravity point. GPSEST gives more accurate than CODSPP.