With the popularization of drone technology, its application in civil and military fields is becoming more and more extensive, but it also brings security risks and regulatory challenges. The necessity of drone defense and countermeasure systems is reflected in the following aspects:

1. Prevent illegal activities
Illegal reconnaissance and espionage: Prevent drones from illegally photographing sensitive areas (such as military bases and government agencies) or stealing data.
Smuggling and contraband transport: Block the use of drones to transport contraband across borders or covertly

2. Protecting public safety
Terrorist attacks and malicious sabotage: Prevent drones from carrying explosives, chemicals, etc. to carry out terrorist attacks.
Threats in crowded areas: Prevent drones from causing safety accidents in areas such as airports and large event venues.

3. Maintaining social order
Privacy Invasion: Reduce the invasion of citizens’ privacy by drones (such as secretly photographing homes and commercial secrets).
Air traffic control: Prevent drones from interfering with civil aviation routes and preventing drone swarms from flying illegally and causing airspace chaos.

4. Ensure the security of critical infrastructure
Energy and communication facilities: Protect key facilities such as hydropower stations, nuclear power plants, and 5G base stations from damage by drones.

Introduction to the composition of drone defense and countermeasure system

The drone defense countermeasure system is usually composed of multiple layers of technical means and coordination mechanisms. The core modules include:

1. Monitoring and early warning layer
Radar detection: Use Doppler radar, phased array radar, etc, to detect the position, speed and heading of the drone.
Radio spectrum monitoring: intercepting the remote control signal of the drone and identifying its operator or control link.
Optical/infrared sensors: Capture drone images or thermal signals through cameras, thermal imagers and other devices.
AI Identification and Analysis: Combines machine learning algorithms to automatically classify drone types and assess threat levels.

2. Interception and disposal layer
Physical Interception:
Net Capture System: Launches high-precision net bullet to capture drones.
Electromagnetic pulse (EMP): Short-term interference with the drone's electronic system, causing it to lose control and fall.
Laser weapons: High-energy laser beams directly destroy drone batteries or motors.
Electronic Countermeasures:
Signal jamming: blocking the communication link between the drone and the controller (such as GPS spoofing and frequency band suppression).
Navigation deception: Induce the drone to deviate from its route or return through false signals.
Chemical/biological means: Use non-lethal munitions (such as sonic dispersal, sticky substances) for specific scenarios.

3. Command and coordination layer
Unified command platform: Integrates data from radars, sensors, and interception devices to achieve threat visualization and real-time decision-making.
Multi-department collaboration: Coordinated response with public security, civil aviation, and military departments to establish a rapid response process.

Application scenario examples

Airport protection: Preventing drones from entering the runway through radar and laser interception systems.
Large event security: Deployment of net-catching drones and signal jammers at concerts and sporting events.
Military restricted areas: Use electromagnetic pulse and laser weapons to counter enemy drone reconnaissance.