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A comment on London Underground hosts tests for 'quantum compass' that could replace GPS. Parent comment

Re:London Underground hosts tests for 'quantum compass' that... by aeyes on Monday June 17, 2024 @03:19PM (#40709883)
There has been constant development trying to improve accelerometer and gyros.

There are even commercial products, for example: https://m2lasers.com/quantum-accelerometer.html

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Re:London Underground hosts tests for 'quantum compass' that... by jiggawatts on Monday June 17, 2024 @09:07PM (#40713045)
They claim 10E-7 m/s/s precision, which is is about 60cm of drift in an hour, and up to 375 meters after a day.

Obviously this won't work without re-calibrating to a known location at least a few times per day.

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