Pengolahan Data GPS Menggunakan Software Gamit 10.6 Dan Topcon Tools V.8 Pada Pengukuran Deformasi Bendungan Jatibarang Tahun 2015

Dam is a water-retaining wall formed from a variety of rock and soil. Dams also amultifunctional tool which has an important role in human life. A building if get the pressure will change the dimension or shape. As a result of this pressure, the body of dam may be deformed. It would require some form of maintenance and adequate care to avoid damage to the dam. Forms of maintenance and care of one of them is by monitoring the deformation in the dam body. Dam deformation monitoring should be done regularly and continuously.This research is about GPS data processing using GAMIT 10.6 and Topcon Tools V.8 software for Jatibarang dam deformation measurement on 2015. the research method is using GPS dual-frequency at six points of monitoring which located on main dam. Data processing of GPS observation using GAMIT 10.6 and Topcon Tools V.8. observation takes three period : March, April, and May 2015. The purpose of this research was to determine the result of data processing using GAMIT 10.6 and Topcon Tools V.8 and also to determine whether there is a significant shift in the main dam of Jatibarang Dam.After data processing using GAMIT 10.6, earned value change of coordinates with the average value of three-dimensional toposentric coordinate changes on the X axis = 1.369 ± 9.729 mm, Y axis = 5.642 ±5.926 mm and Z axis = 6,417 ± 4,418 mm. While on Topcon Tools V.8, earned value change of coordinates with the average value of three-dimensional toposentric coordinate changes on the X axis = 0,168 ± 0,467 m, Y axis = 0,253 ± 1,547 m, and Z axis = 0,261 ± 1,108 m. In this research, the results of data processing using scientific software 10.6 is considered correct one. Thus concluded that each point of observation deformed numerically. However, after a statistical test with confidence interval 95% stated that the six monitoring stations, dams do not have a significant shift. Based on the results of statistical tests, it can be concluded that each point of observation is not deformed