Observation of the GNSS jamming sources during commercial flights

Russia invasion to Ukraine and Middle East conflicts provides problems for Global Navigation Satellite System (GNSS) based navigation systems in aviation because various GNSS jamming and spoofing systems are using as electronic warfare. Navigation systems make an important contribution to the safety of flights. Thus, it is important to know where jamming or spoofing stations are located and what kind of signals are using. This information can help to develop interference mitigation strategies. Signals on GNSS frequencies were safely received during flights on commercial airlines. The location (in Belorussia territory) of the GNSS jamming signal was estimated by using signal strength and aircraft position information. We propose several methods to locate the source of the interfering signal. In addition, we have suggested location of aircraft GNSS antennas to mitigate GNSS jamming and spoofing.