A Field-Circuit Co-Simulation Approach to Analyzing UAV Shielding Effectiveness Under L-Band Gaussian Pulses

This paper investigates the shielding effectiveness of small and medium-sized UAVs under L-band Gaussian sinusoidal pulse irradiation using field-circuit co-simulation. The study focuses on the electromagnetic coupling effects on UAVs with shielded and unshielded cables. Results show that the small UAV, featuring unshielded twisted-pair cables, exhibits higher electric field intensity and power density, with significant coupling peaks at 1.03 GHz and 1.37 GHz, indicating potential vulnerability to electromagnetic interference. In contrast, the medium-sized UAV with shielded single-core cables demonstrates lower coupling peaks and better electromagnetic compatibility (EMC). The findings highlight the critical role of shielding in enhancing UAV stability and resistance to electromagnetic interference.