The Russian army is currently buying signal jammers and plans to install them on cell phone towers. The idea is simple: The Kremlin can trigger these jammers during a conflict and pray that the jammers degrade the accuracy of U.S. missile strikes.
GPS jamming technology can also be used to manage drones. Professor Todd Humphreys and his team used GPS spoofing technology to take control of an unmanned aircraft in Austin. They use a miniature helicopter to disable the drone's GPS system and then provide the drone with coordinates to navigate to a designated target.
Regarding the working principle of the device, there is such a professional description: "The working principle of the mobile phone is that in a certain frequency range, the mobile phone and the base station are connected by radio waves, and the complete data and voice transmission is carried out at a certain baud rate and modulation." For this communication principle, the mobile phone mask is sweeping along the channel to the high-end at a certain speed. The conversion rate can be used to interfere with the signal in the receiver's message, so that the phone cannot detect the normal data from the base station and cannot establish a connection with the base station.
There is also no way to allow jamming devices to interfere with safety-critical frequencies, so there are some frequencies you can fly your drone with criminal intent and be pretty sure they won't interfere. Then you have autonomous flight - there's no reason why a drone can't take a programmed route and it's almost impossible to be affected by interference - turn off the satnav belt, and maybe eventually, his death estimate will become so inaccurate as to be problematic, but if you really want to do something stupid, Then it is not difficult to use a direction finder based on the station tower local FM radio, map markers, the position of the sun, etc., and maintain the accuracy of the calculation.
Today, with the proliferation of media, the developed communication network affects not only the university classroom, such as the meeting, the meeting order of various daily social activities are affected by the arc. In class, teachers and students should reach a consensus that teaching order should not be disrupted, it is illegal for students to play mobile phones, it is obvious.