IONOSPHERIC MAPPING USING DENSE GNSS NETWORK IN JAVA, INDONESIA

• Main Author: Permata Embunsari, Devi
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/71315
• Institution: Institut Teknologi Bandung

Ionosphere is the main contributor of error in GNSS observation. One of the ionosphere indicator is Total Electron Content (TEC). Ionosphere study can be done using Equitorial Atmospheric Radar, GPS Scinda, MF Radar and Ionosonde. But these methods are expensive and their availability are low. As an alternative, ionosphere monitoring can be done using GNSS observation. From this research we can see ionosphere variation for spatial and temporal by VTEC calculation, and analyse factors that affecting the variation, and determine interpolation method to obtain ionosphere map. This research using BIG GNSS CORS data in 2015, satellite orbit, differential code bias (DCB), and IONEX. Data processing is done using phase and code data, where phase data use carrier phase levelling method. The result are phase data processing gives better result, where phase deviation in CPAS station on 1 January is 0.443 TECU and pseudorange deviation is 1.094 TECU, deviation between IRI model and CORS data is 6.210 TECU in CGON station, while lowest daily variation on CTGR station is 7 TECU and highest in 82 TECU. Scintillation phenomena can be seen on February.