Researchers at the 痳豆在线 have developed a new method that gives aircraft a backup system in case GPS fails: An antenna on the ground that can tell a drone where it is. The team successfully tested their system in June.


Researchers at the 痳豆在线 have developed a new method that gives aircraft a backup system in case GPS fails: An antenna on the ground that can tell a drone where it is. The team successfully tested their system in June.