Design and implementation of real-time detection for weak UAV telemetry and control signals based on frequency-domain correlation

The use of Unmanned Aerial Vehicles (UAVs) has gradually become widespread across various fields. Nevertheless, due to the inadequate regulatory systems for UAVs, incidents that pose a threat to public safety have occurred frequently in many countries, making the development of an automatic UAV detection system particularly crucial. Detection methods such as radar, infrared, and acoustic waves have been applied in UAV detection systems, yet each has its own detection limitations under specific conditions. This paper proposes a real-time detection method for UAV measurement and control signals based on frequency domain correlation, which can stably detect UAVs under low signal-to-noise ratio conditions. It can provide certain references for the development of UAV alarm devices.