UAV flight mainly relies on WiFi 2.4G and 5.8G frequency bands, and relies on GPS satellite signals to determine the location and implement remote control. GPS relies on medium-orbit satellites. In general, the signal reaches the surface of the earth after tens of thousands of kilometers. It is already very weak. Therefore, it is relatively easy to scramble uav signals when the drone is very close to the defender. The use of drone jammers is an effective means of defending drones.
At present, national anti-UAV technologies are mainly divided into three categories: through high quality drone jammer block signals, sound waves and other technologies; using laser weapons, or using drones to directly destroy drones; by hijacking radios and other monitoring controls. The second and third types of technology are mainly used in the military field. Civil UAVs need to use radio technology to realize functions such as positioning, remote control, and image transmission. Therefore, in reality, UAV interference technology is used to achieve The boycott of man and machine.
Some special-purpose drones can use methods such as terrain matching, image recognition, and high-precision inertial navigation to determine their position and perform their tasks autonomously, but they are not yet popular in the civilian sector. Since the drone must use radio technology, it can interfere with the radio to achieve the goal of getting the drone out of control or reentry, so the Powerful UAV Signal Scramblers are the most used means to prevent the drone.
