In recent years, civil unmanned aerial vehicle (UAV) technology has matured significantly. While its applications have expanded across various beneficial fields, accidents and safety incidents caused by civil drones have become increasingly common. Although drones offer many positive prospects, the potential for malicious use is rising. Overall, illegal or unauthorized drones pose real and potential threats to public safety, normal production activities, and daily life. These threats fall into three main categories:

Peeper in the Air: Drones can fly above most obstacles, easily capturing images inside high-walled compounds. Equipped with camera stabilization, flight recording, and real-time image transmission systems, they support fixed-point cruise, follow-up, and panoramic photography. Without any modification, drones can be used for covert surveillance and theft of sensitive information.

Dangerous Transfer Station: Due to tight ground security around major event sites or important facilities, criminals may use drones to drop explosives, biological poisons, radioactive substances, or illegal propaganda materials. Using GPS navigation, drones can bypass walls and fences even at night, accurately delivering harmful items to designated locations without alerting guards or alarm systems.

Uncontrollable Risk: Hobbyists, model aircraft enthusiasts, or even ordinary individuals may fly drones over event sites or restricted areas out of entertainment, curiosity, or unintentionally. In recent years, intrusions have caused chaos and significant damage in sensitive areas such as civil aviation airports, prisons, critical warehouses, government buildings, and conference venues. Beyond illegal invasion risks, accidents like collisions, crashes, fires, and explosions caused by poor DIY drone quality or misoperation also pose major hazards. Therefore, countermeasure systems targeting these low-altitude, slow-speed, small-size drones—especially those integrating a Drone jammer module—have emerged as essential solutions.