According to a Chinese state-sanctioned study, signals from SpaceX's Starlink broadband internet satellites could be used to track US stealth fighter jets, such as the F-22.
G60: The Story of China's Other Starlink Competitor
They can claim that all they want but the reality is: It's not that useful militarily, and if it was, Beijing almost certainly wouldn't let anyone complain about it.
The research describes how the academics were able to recognize the rough location of a commercial drone by observing disturbances in electromagnetic signals from Starlink satellites caused by aircraft passing them. The system could "provide significant advantages in detecting small and stealthy targets," the team claimed.
Academics, led by Professor Yi Jianxin from Wuhan University's School of Electronic Information, launched [paywall] a commercial DJI Phantom 4 Pro drone and sent it over the coast near the Chinese city of Guangdong. The researchers chose the drone because they estimated it has the same radar signature as a modern F-22 fighter jet.
