PENGEMBANGAN PERANGKAT LUNAK PENGOLAHAN DATA GPS UNTUK BASELINE PENDEK

• Main Author: Kurnia Utama, Aditya
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/65243
• Institution: Institut Teknologi Bandung

The use of GPS satellite technology has been growing since the past, which was only for static positioning with post-processing. GPS satellite technology has been used for various needs, such as drone positioning in photogrammetric mapping, LiDAR, and monitoring systems for example in mining areas. This utilization requires an accurate GPS data processing device using a relative processing scheme with a short baseline (5 - 40 kilometers). Therefore, a software Kalman Filter Double-Difference ITB (KFDD-ITB) was formed which performs relative GPS data processing using the double-difference method by producing outputs in the form of position values and Zenith Tropospheric Delay (ZTD) values. In this study, the KFDD-ITB software was tested using RINEX data from InaCORS CBTL, CPTS, and JOGS stations on day of year (DOY) 10 to 29 in 2020. Accuracy of results was calculated by comparing the results of processing coordinates with InaCORS coordinate data. and ZTD KFDD-ITB with ZTD ECMWF Reanalisys v5 (ERA5) data from the European Center for Medium-Range Weather Forecasts (ECMWF). The best coordinate accuracy test results were obtained from the CBTL-CPTS baseline processing at DOY 10 with RMSE values for the N axis of 0.000 m, the E axis of 0.025 m, and the U-axis of 0.013 m. Meanwhile, the best ZTD accuracy value was obtained from the CBTL-CPTS baseline processing with the RMSE ZTD value of the CBTL receiver 0.080 m and the CPTS receiver 0.089 m. In the CBTL-JOGS baseline, the RMSE ZTD value of the CBTL receiver was 0.084 m and the JOGS receiver 0.091 m.