Application of electromagnetic technology in drone detection and countermeasure

1. Interference control signal: By emitting electromagnetic waves with the same or similar frequency as the drone control, the control signal received by the drone can be interfered with, causing it to lose control or make an emergency landing. For example, the drone navigation deception system is based on this principle, sending a navigation signal stronger than the remote control to the drone to induce the drone to stay away from the target.
2. Damage electronic components: High-intensity electromagnetic waves can directly damage the microelectronic components on the drone, making the drone unable to work properly.
3. Thermal and electromagnetic effects: When high-power microwaves act on drones, they will produce thermal effects, electromagnetic effects and nonlinear effects, causing damage or interference to the drone's electronic equipment and components.
4. Radar detection: New radar systems can make breakthroughs in signal design, signal processing algorithms, ground clutter suppression, etc., to improve the detection performance of drones.
5. Radio signal monitoring: Use the spectrum characteristics of the drone flight control system and the image transmission system to analyze and realize the detection and identification of drones. For example, the TDOA technology and AOA technology mentioned earlier use the signal of the monitoring radio to determine the specific location of the aircraft.
6. Natural electromagnetic interference: Phenomena such as lightning in the natural environment can also affect drones, especially when their antenna systems are fragile, which may cause damage to electronic components.

In general, in practical applications, electromagnetic interference technology needs to consider a variety of factors. For example, different brands and models of drones may use different control signal frequencies, so it is necessary to design electromagnetic interference equipment that can adapt to multiple frequencies. At the same time, it is also necessary to control the range and intensity of interference to avoid unnecessary impact on other surrounding equipment.