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A comment on Royal Navy Says Quantum Navigation Test a Success. Parent comment

Re:Royal Navy Says Quantum Navigation Test a Success by bluGill on Wednesday June 07, 2023 @08:31AM (#36225959)
The earths magnetic field is not constant. I don't know how much it changes, but I know magnetic north drifts a bit every year. And every once in a while the field reverses (IIRC we are like 10k years overdue for a reversal if we read the history of them right - a lot of guesses go into that of cousre)
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Re:Royal Navy Says Quantum Navigation Test a Success by bequanna on Wednesday June 07, 2023 @09:45AM (#36226725)
Right, but it seems it is constant enough in the near term for practical purposes.
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Re:Royal Navy Says Quantum Navigation Test a Success by bluGill on Wednesday June 07, 2023 @01:51PM (#36230531)
I didn't mean to imply that it wasn't useful for practical purposes. That is what the article is about. I just meant to point out that there are limits and disadvantages to work around. I'm expecting to make this useful they will have to have a team to constantly remap the earth, and send those updates to whoever needs the information.
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Re:Royal Navy Says Quantum Navigation Test a Success by AndrewKemendo on Wednesday June 07, 2023 @11:03AM (#36227698)
There’s nothing saying that you can’t do a re-localization or remapping path with basically infinite frequency, or any frequency that we know that there is variance around. At a minimum then, it becomes a better standard for which other things can bear on.
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