Simulation of Dynamic Electromagnetic Interference Environment for Unmanned Aerial Vehicle Data Link

In order to test the anti-interference ability of an Unmanned Aerial Vehicle （UAV） data link in a complex electromagnetic envi- ronment, a method for simulating the dynamic electromagnetic interference of an indoor wireless environment is proposed. This method can estimate the relational degree between the actual face of an UAV data link in an interface environment and the simulation scenarios in an anechoic chamber by using the Grey Relational Analysis （GRA） theory. The dynamic drive of the microwave instrument produces a real-time corresponding interference signal and realises scene mapping. The experimental results show that the maximal correlation between the interference signal in the real scene and the angular domain of the radiation antenna in the anechoic chamber is 0.959 3. Further, the relational degree of the Signal-to- Interference Ratio （SIR） of the UAV at its reception terminal indoors and in the anechoic chamber is 0.996 8, and the time of instrument drive is only approximately 10 μs. All of the above illustrates that this method can achieve a simulation close to a real field dynamic electromagnetic interference signal of an indoor UAV data link.