Placement Analysis ofGCI Radar For Supporting Indonesia Air Defense Using Geographic Information System (Case Study: West Kalimantan)

The process of relocating the National Capital of Indonesia from its initial position on Jakarta (Java Island) to Kalimantan Island would cause a shift in Indonesia's Center of Gravity (CoG). Since there are now only two radars on Kalimantan and they are still unable to cover the entire territory of Kalimantan, air defense might be the primary concern that needs to be strengthened. The presence of a blank-spot area in the West Kalimantan region should be a consideration for placing radar in this region. The result of the study is coordinate point which is the exact location of the radar placement. This study aims to analyze the location of the GCI Radar placement in the West Kalimantan region using the Geographic Information System (GIS) and Radar Coverage methods, to ensure that air defense on Kalimantan Island is conducted as effectively as possible to detect and identify threats to COG of Indonesia. The data used for determining the location are altitude, radar coverage, road infrastructure, communication infrastructure, disasters, and land cover. Data processing using ArcGIS applications to help determine the appropriate location and test Radar coverage with the SPx Radar Coverage. The location with the best radar coverage is at coordinates 008'34.8”N 110032'34.8”E.