Interference Issues on New GNSS Signals : Report from South Korea

초록

Radio-frequency interference (RFI) in GNSS signal bands can pose a threat to modern human life and safety by degrading the performance of GNSS services for positioning, navigation, and timing. The L1 band, which is commonly used in many GNSSs for interoperability, has been well-protected by ITU regulations for the past 50 years. As a result, unintentional RFI sources are rarely observed, but due escalating drone and electronic warfare, this topic is unfortunately gaining importance for the safe management of air traffic. RFI monitoring is the initial step in localizing and eliminating RFI sources. Recently, a technique for monitoring RFI using spaceborne GNSS-R data to map ground-based RFI transmission on a global scale was reported to the scientific society.