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[Technical Analysis] This article dissects the multi-layered defense system for drone countermeasures.

Release time:

2025-10-04

The rapid advancement of drone technology has brought convenience to both military and civilian sectors, yet it has also sparked a range of security concerns, including privacy violations and threats to national defense. Building a comprehensive anti-drone operational technology system has thus become critical for safeguarding national security and social stability. Multi-layered anti-drone defenses achieve this by integrating technologies such as detection, jamming, and physical interception, creating a closed-loop system that seamlessly transitions from "identifying threats" to "neutralizing them," thereby ensuring airspace safety even in complex and challenging environments.

The core technological components of multi-layered defense

Detection System

The detection system, responsible for identifying and locating drones, serves as the starting point for defense, and its core components include Radio Frequency Detector 、 Radar System 、 Optoelectronic sensor 、 Sound wave detector Etc.

Radio Frequency Detector

The radio frequency detector works by capturing Radio frequency signal And provide information about its Existence 、 Intensity And Characteristics Detailed information, such as capturing drone communication signals, identifying the model and location, and detecting the range. 1-8 kilometers 。

Radar System

Radar It is a commonly used device for low-altitude monitoring. Take Wuhan Leikeda Technology Co., Ltd. as an example. 226 Series Low-Altitude Security Radar For example:

Lei Ke达 226 Series Low-Altitude Security Radar

Radar is generally used X-Band 、 C-Band 、 S-Band Using the same band, adopting Pulse Doppler System 、 Active Phased Array Technology Wait, capable of precisely detecting drones and other objects even in complex environments. Low, Slow, Small “Target. The detection range can be customized by selecting different radar models based on user needs—such as these radars from Leica Radar, which offer a range coverage of…” 1.5-25.0km , suitable for Border 、 Airport 、 Military base Low-altitude flights within key areas Drone 、 Aircraft Detection, surveillance, and target designation, and can also achieve High-precision positioning With 24/7 Monitoring 。

Lei Keda Optoelectronics Real-Scene Images

Optoelectronic sensor

Optoelectronic sensors can be achieved through Optical camera 、 Infrared thermal imager These devices directly capture the target's visual and feature information, making them suitable for At night 、 Foggy day Or in scenarios with high requirements for target confirmation.

With Wuhan Leikeda Lightning and Sound All-in-One Machine For example, it relies on Narrow field of view 、 High-resolution imaging Features allow it to be paired with different radars, enabling diverse detection capabilities. Used during the day Camera Presenting drone-shaped details, for use in the night Infrared thermal imager Capturing thermal radiation to precisely distinguish between target types—such as drones, flying birds, or clutter.

Sound wave detector

Images sourced from the internet; please contact the editor to have them removed if there's any infringement.

The acoustic detector utilizes sounds inaudible to the human ear. Ultrasound The device used as a detection source for probing is called an ultrasonic detector, and it is generally employed to detect Moving object The working principle is to utilize Ultrasound Emission , which measures the distance to the object being tested by analyzing the time difference between the emitted signal and the received echo—ideal for urban environments.

Interference System

By disrupting drone communication and navigation functions via electromagnetic signals. The core components include Radio Frequency Jammer 、 GPS Jammer 、 Portable interference gun Wait—utilizing software-defined radio technology, it supports frequency band expansion and real-time parameter adjustments.

Wuhan Leikeda Omnidirectional Anti-Drone System & Haidongqing Directional Anti-Drone System

With Wuhan Leikeda Owl omnidirectional anti-no-system For example, Wuhan Leikeda's Owl omnidirectional anti-no-system It is achieved through the comprehensive application of Radar Detection 、 Interference 、 Deception And Increase spectrum allocation Analysis Advanced technological methods to achieve effective drone detection 、 Identify 、 Control And Interference 。

“The Owl” anti-drone system is comprised of Surveillance and Control Unit 、 Electromagnetic Interference Unit 、 Deception Unit And Accusation Unit Consisting of four parts, 2-3.5Km Internally adopted Radar With Spectrum Dual detection and recognition, 1KM Conduct within Deception With Radio Dual-band interference, high-gain directional antenna, single-channel power output of 25–30 watts, with energy focused for precise jamming distance. 1–5 km , the system automatically executes the defense plan, immediately activating countermeasures—such as interception or navigation deception—upon detecting rogue drones, thereby ensuring the safety of the area.

Physical Disposal System

Net-Catching Drone System (Image sourced from the internet; please contact the editor for removal if there is any infringement.)

The physical disposal system primarily relies on physical methods. Remove Or Destroy drones , the core components include Trapping Net Gun 、 Intercepting drones 、 Laser weapons 、 High-energy micro Wave-based devices, such as emission Electromagnetic pulse ， Physical Disposal System Usually associated with Interference System Collaborative operation.
In summary, the multi-layered defense system for countering drones achieves precise detection of low, slow, and small aerial threats through a hierarchical, coordinated approach encompassing "detection - jamming - physical interception." This system not only enables efficient response by seamlessly transitioning from signal suppression to physical destruction but also provides robust technical support for airspace security in complex scenarios. As drone technology continues to evolve, this defense framework will undergo ongoing upgrades—driven by both technological refinement and enhanced operational mechanisms—further strengthening the "airborne barrier" that safeguards public safety and protects critical infrastructure.