The SIMON Monitoring System ensures the security of the 1030/1090 MHz frequency band, which is shared by A/C/S radars, multilateration, ADS-B and IFF modes 1, 2, 3. The system enables continuous monitoring and evaluation of interrogations and replies concerning potential anomalies. All key interrogation parameters, such as interrogator code (IC), pulse repetition frequency (PRF), and antenna radiation pattern are evaluated, and a load of a specified on-board responder is determined.

The system provides warnings in real time based on pre-defined triggers, determines sources polluting the RF band, and offers analyses of trends and reports with history. The system ensures a high standard of air traffic safety by maintaining the security of the 1030/1090 MHz frequency band.

Complies to Commission Implementing Regulation (EU) No 1207/2011 according to Acceptable Means of Compliance and Guidance Material by European Union Aviation Safety Agency (EASA).