Protocol Cracking in Drone Countermeasures

Protocol cracking is an advanced technology that specifically analyzes and interferes with drone communication signals.

1. Signal frequency band: Civil drones usually use two conventional frequency bands, 2.4 GHz and 5.8 GHz, for communication, so protocol cracking mainly targets signals in these frequency bands.

2. Software radio technology: Software radio technology is used to crack the communication between drones and their remote controllers, which includes analysis of frequency, filtering, digital-to-analog conversion, modulation mode, and channel coding.

3. Multi-layer protocol analysis: In order to effectively crack and defend drones, it is necessary not only to analyze at the physical layer, but also to crack protocols at multiple layers such as the media access control (MAC) layer, logical link control (LLC) layer, network layer, and application layer. In addition, compressed data needs to be decompressed, and encrypted data needs to be decrypted.

4. Real-time monitoring and distinguishing between friend and foe: Software radio protocol cracking technology can realize fully automatic real-time monitoring of drones, and can distinguish between friend and foe drones, ensuring that there is no impact on the surrounding environment (such as WiFi, Bluetooth, aircraft towers, etc.).

5. Product application: Based on this technology, relevant anti-UAV products have been developed, including vehicle-mounted, fixed, portable and modular forms, and mass production capacity has been formed.

6. Cognitive engine assistance: When the system finds an unknown UAV, it will upload its radio spectrum and other information to a special cognitive engine, which can reverse the radio protocol and compare it with the built-in identification database to determine the identity of the UAV.

In summary, protocol cracking in UAV countermeasures is a comprehensive technology that combines software radio, multi-level protocol parsing and real-time monitoring and other technical means to achieve the purpose of effectively identifying and defending UAVs. With the continuous development of UAV technology, countermeasures technology is also constantly improving to ensure the safety of airspace.