The handheld drone detection and positioning system integrates spectrum analysis, Cognitive Radio Protocol Cracking technology, and message-level protocol parsing capabilities. It is designed to address the challenges of detecting, identifying, issuing early warnings, and tracking low-altitude drones in both domestic and international civilian contexts. This system can perform passive detection of drones in protected areas, distinguish between friendly and hostile entities, and provide accurate positioning information. By utilizing CRPC for message-level protocol analysis, it can determine the real-time locations of target drones and their operators, and continuously monitor the flight trajectories of these drones.