GPS is incredibly precise in its measurements thanks to atomic clocks and the satellite constellation is maintained in perfect sync.
The EU claims Galileo is even more precise than GPS, with an accuracy down to less than one metre, compared to GPS’s three metres.
However, Sandia scientist Peter Schwindt believes future vehicles could keep track of their own position without connecting to GNSS signals.
This would be achieved with onboard devices that fire lasers into small clouds of rubidium gas, just like the one Sandia researchers have contained in their lab.
The main benefit of the technology over atomic accelerometers and gyroscopes, for example, is its size and scalability.
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