Jamming GPS signals is a regular feature of Russian military security operations
Russia has jammed GPS signals around NATO exercises on more than one occasion, often from a base in Syria jamming large swathes of the Middle East. Spoofing GPS signals in Moscow and the Black Sea to trick receivers into reporting they are at airports miles from their actual location is well documented. The United States has formally expressed concern about the recent surge of Russian troops and their activities on the Ukrainian border. Two U.S. Navy ships are reportedly heading to the Black Sea to monitor the situation. The birth of mobile phones has indeed shortened the distance between people and brought great convenience to everyone's life. However, with the popularity of mobile phones, everyone has basically reached a form that is inseparable from the body, which gives many opportunities. It can do a lot of damage. Therefore, the cell phone jammer market also came into being. Some areas that require strict control, such as military power plants, prison...