The three-dimensional security system JT 27-5 UAV/Drone Detection Radar searches and finds targets within a radius of 5 kilometers of it. The system automatically finds the target and analyzes its flight characteristics to evaluate the threat of the target. And the system automatically assigns electro-optical equipment to track and identify the high-risk targets. Combining the input of radar and electro-optical equipment, the high-precision data of target position is formed to provide precise guidance information for the anti-UAV equipment. It realizes target positioning on the map, and has trajectory displaying and replaying functions. Positioning includes displaying target distance, position, altitude, flying direction, speed, etc. Detecting distance can be up to 5 km. Advanced modals have longer detecting distance up to 50 km upon client's request. Target speed range is 1 ~ 60 m/s. Higher target speed range can be customized upon request. Speed accuracy of target is less than 1 m/s. Distance accuracy is less than 10 m. Detecting range covers 360º. Position accuracy is less than 0.5º. It supports alarm area division to give different and clearer warning to operating staff. The system supports fixed installation and vehicle-mounted. It can be used for many different units and organs for airspace defense including airports, important organs, military base, spacecraft base, hydropower plant, nuclear power plant,  coastal defense,  etc.