In recent years, with the rapid development of drone technology, drones have been increasingly widely used in various fields—from civilian aerial photography to logistics delivery. They have become an indispensable part of modern society due to their unique advantages. However, the widespread application of drones has also brought new security challenges: illegal drones intruding into no-fly zones, conducting "unauthorized flights" (commonly referred to as "black flights"), or even being used for illegal activities such as reconnaissance, infiltration, and sabotage. These pose severe threats to national security, social stability, and personal privacy. Therefore, anti-drone devices have emerged and are playing an increasingly important role in social management.

Ⅰ. Security Challenges Posed by Drones

As drone technology continues to advance, drones are being used more frequently in various fields. However, the popularization of this technology has also introduced security risks. Drones can carry various weapons to perform precision strikes, posing severe threats to critical infrastructure and even civilians. In the civilian sector, "black flights" (unauthorized drone operations) occur frequently, disrupting aviation order and endangering public safety. For example, illegal drone flights in airport clearance areas may lead to serious aviation safety accidents. Additionally, drones may be used for surveillance, eavesdropping, or information theft, infringing on personal privacy and intellectual property rights.

Ⅱ. The Importance of Anti-Drone Devices

To address the security challenges posed by drones, anti-drone devices have emerged as a crucial solution. Their main functions include detecting, jamming, and neutralizing illegal drones to protect critical facilities and personnel safety. A typical anti-drone system consists of three core components: detection systems (to identify and track illegal drones), jamming systems (to emit signals that disrupt drone control and navigation), and control systems (to operate the entire setup for detection and countermeasures). Anti-drone devices are widely applicable in key areas such as airports, government agencies, and large event venues to prevent illegal drone intrusions and potential threats. For instance:

• Airports: Deploying anti-drone systems around airports can effectively monitor and intercept drones attempting to illegally enter no-fly zones, ensuring the safe takeoff, landing, and flight of aircraft.

• Government Facilities: These devices prevent drones from conducting reconnaissance or sabotage, protecting national security and facility safety.

• Personal & Corporate Rights: Anti-drone systems can detect and jam drones used for surveillance or information theft, safeguarding personal privacy and intellectual property.

Ⅲ. Usage of Anti-Drone Devices

The operation of anti-drone devices typically follows these steps:

1. System Startup Turn on the power of the anti-drone device to ensure all systems are in standby mode. This is the first and foundational step to ensure normal operation.

2. Detection Mode Setting Select the appropriate detection mode (e.g., automatic or manual) based on needs:

• Automatic mode: Suitable for areas requiring continuous monitoring (e.g., airports).

• Manual mode: Suitable for areas needing flexible adjustments (e.g., temporary event venues).

3. Monitoring & Identification Monitor the detection system in real-time, analyzing data (such as radio/radar signals emitted by drones) to identify potential threats. This step enables accurate tracking of drone type, quantity, and flight trajectory.

4. Countermeasure Decision-Making Once an illegal drone is detected, immediately assess the situation (considering factors like drone type, flight altitude, and threat level) to decide whether to activate the countermeasure system. This ensures rational and effective response actions.

5. Jamming Signal Emission If a countermeasure is approved, operate the control system to emit jamming signals (e.g., electromagnetic interference, GPS spoofing, or directional acoustic interference) to disrupt the drone’s control and navigation. This forces the drone to lose control, either landing safely or returning to its origin.

6. Effect Monitoring & Evaluation After emitting jamming signals, continuously monitor the drone’s status (e.g., flight trajectory, altitude, speed) to evaluate the effectiveness of the jamming. Adjust the jamming strategy if necessary (e.g., increasing signal strength for resistant drones).

7. Follow-Up Processing

• Post-Countermeasure Actions: If the drone is neutralized, decide whether further steps are needed (e.g., notifying security personnel or the police).

• Equipment Maintenance: After successful countermeasures, inspect and maintain the anti-drone device to ensure it remains in optimal condition for future tasks.  Anti-drone devices are essential for mitigating the security risks posed by drones. By integrating detection, jamming, and control functions, they provide a comprehensive solution to protect critical areas, national security, and personal rights.