Jammer-D directional jammer to automatically track the target, intercept the image for identification, send out an alarm prompt after determining the target, and automatically turn on the jamming equipment to interfere with the target UAV through electromagnetic suppression technology, forcing the UAV to hover, land or return to the original route. The whole system is modular design, each frequency band works independently according to the software platform control, and has its own GPS, which is convenient for networking and deployment.