Calculations of electromagnetic compatibility between radio equipment of a command and control point of unmanned aircraft system and stationary land radio stations

An analysis procedure of electromagnetic compatibility between radio equipment of a com-mand and control point (CP) of unmanned aircraft (UA) carrying a radio transmitter (RT) and a radio receiver (RR) and stationary land radio electronic equipment (REE) stations containing radio transmitters and/or radio receivers and surrounding the CCP is considered. The procedure involves analysis of the scenarios where emissions produced by the surrounding transmitters may have an effect on the quality of the signal received by the CCP receiver and where the emission produced by the CCP transmitter may have effect on the quality of signals received by the recei¬vers surrounding the CCP. It assumed that frequency-hopping spread spectrum signals are applied in both downlink and uplink. To assess the interference effect from emissions of the surrounding transmitters on the quality of the signal received by the CCP receiver the protection ratio is used. To assess the interference effect from emissions of the CCP transmitter on the quality of the signal received by the surrounding receivers the receiver desensitization is used.