Generally speaking, the simplest and direct way to block interference is signal interference, which has relatively low technical content and low cost. At present, most UAVs on the market use the combination of GPS satellite navigation system and inertial navigation system. It is not difficult to interfere with GPS signals. drone jammer only need to launch a certain amount to the target UAV. The power of the directional radio frequency is sufficient. After the UAV GPS signal is interfered, it is unable to obtain accurate self-coordinate data, which will cause the UAV to lose control to a certain extent and cause the operation to fail. However, this method is also the gentlest among many "encirclement and suppression" drone methods. It prevents the drone from falling, and is a way to reduce the drone's "harmful purpose" through interference.