Study on the Effects of Ultra-Wideband Electromagnetic Pulses on Unmanned Aerial Vehicles

Unmanned aerial vehicle (UAV) countermeasure technology plays a pivotal role in regulating the lawful use of UAVs, preventing their misuse, and fostering a conducive environment for the healthy development of the UAV industry. Simultaneously, UAV countermeasure technology catalyzes for technological innovation in UAVs, enhancing their safety and reliability. This article focuses on the front-door coupling effects of a specific UAV system. Through simulation modeling of the UAV system, we have obtained the variation trend of the UAV system's bit error rate (BER) under the influence of ultra-wideband electromagnetic pulses (UWB EMPs). The results indicate that the low-noise amplifier and the automatic gain controller in the UAV's radio frequency front end exhibit saturation effects. When the BER of the UAV data link or navigation system reaches the threshold defined by communication protocols, it results in the corresponding system losing lock. Furthermore, experimental analysis involving the irradiation of UAV data link communication systems and navigation systems with UWB EMPs is conducted. The results provide effective validation of the UAV failure effects.