American engineers taught Starlink space satellites to track objects on Earth: in a similar way
According to the researchers, they were guided by information about the movement and location of satellites, but did not have access to the transmitted data.
These signals are unknown and not intended forpositioning or navigation. However, if used correctly, the exact position of a ground stationary receiver or mobile vehicle can be estimated.
Research text
The authors of the new work were able to determinelocation from Starlink signals: They found that there are nine signal carrier peaks in the satellite signal at 11.325 GHz. Next, they tried to calculate the location using carrier phase tracking, a method used to improve the accuracy of GPS measurements to within ten centimeters.
Their system recorded signals for 800seconds, as a result, it was possible to calculate the coordinates with an error of 33.5 m.Adding data from the altimeter, removing the uncertainty in height, they achieved an error of 7.7 m.
The authors recorded signals from sixsatellites in turn, because so far so many devices are not flying over their area at the same time, but as Starlink grows there should be more of them, which will increase the accuracy of geolocation.
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