An Integrated Design of UAV Passive Detection and Blanket Jamming Based on SDR

Unmanned aerial vehicles (UAVs) have seen extensive development across multiple civilian sectors in recent years. However, the proliferation of UAVs has been accompanied by a lack of effective regulation, posing severe threats to low-altitude airspace security. This paper proposes an integrated scheme for passive detection and blanket jamming of UAVs based on software-defined radio (SDR). The scheme uses SDR, low-cost hardware, and GNU Radio to achieve passive detection and blanket jamming against UAV signals. By sweeping frequencies with SDR to stitch together large bandwidth spectra and employing adaptive thresholding for detection of UAV signals, the system can select different signal types, powers, and frequency bands for blanket jamming. Furthermore, it can be integrated with network server terminals to expand functionalities and meet diverse requirements. Various indicators have been tested in the laboratory and outdoor environment. The results validate the effectiveness of the passive detection and blanket jamming of UAVs.