For public security activities, there are both centralized single-point defense zone scenarios and multi-point deployment scenarios with a large range and long distances. Combining many years of low-altitude security experience, Kongyu Technology proposes the following two types of system solutions for such public scenarios: Small Area protection: The equipment uses radio + omnidirectional interference + jamming gun + radar (optional) + photoelectric (optional). The equipment is installed at the commanding heights of the defense area. After the system is running, drone monitoring can be carried out within a radius of 5 kilometers. UAVs are driven away and forced to land within a radius of 3 kilometers; Large defense area protection: The equipment adopts the "2+1" mode (important two-end deployment points + vehicle-mounted mobile inspection support), and the equipment is set up at the commanding heights of important areas of activity. The vehicle-mounted mobile station designs inspection routes and cooperates with fixed stations for protection. The overall system controls drones over large and long-distance control areas to ensure that the activity process is not affected by drones; the system has complex electromagnetic environment detection and multi-target capabilities. Technical advantages such as simultaneous processing, black and white lists, and pilot positioning, as well as mobile and portable solutions for blind filling and line inspection, are sufficient to protect public activities from drone intrusion.