The radio positioning detector detects and locates illegally intruding drones through radio frequency scanning feature recognition and decoding. It can be networked with multiple stations to obtain the three-dimensional coordinate information of the drone through a time-difference passive positioning algorithm, with high tracking and orientation accuracy. . It can detect and intercept control signals, image transmission and other information between the drone and the operator. It can work at night, in dense fog and in bad weather, and can monitor and record 7x24 hours without interruption.