Implementation TDOA and FDOA Algorithms for Satellite Geolocation Interference Finder in Indonesia

Satellite telecommunication becomes the most important telecommunication facilities for an archipelago country such as Indonesia. Indonesia has at least four satellites to support data and voice infrastructure over Indonesia region. Government application, private sector application such as banking and internet application, also 4G infrastructure mostly send through over satellite. The main problem of the satellite is interference disruption cause by unauthorize VSAT (very small aperture terminal) transmitter, equipment failure and VSAT misaligned. This paper will discuss how to find the source of interference using TDOA (time difference of arrival) and FDOA (frequency difference of arrival) algorithms and also the experimental result in Indonesia. The results are very precise and can be implemented easily at a low cost.