613
World's first GPS-free quantum navigation trial succeeds at sea (interestingengineering.com)
submitted 5 days ago by to c/technology@lemmy.world
151 comments fedilink hide all child comments
you are viewing a single comment's thread
view the rest of the comments
[–] 3 points 4 days ago (1 child)

I'm not sure you got me. How do the map makers update the map? If the gravity variance changes so it can't be used to determine your position then clearly you need some other way to determine your position to update the gravity map. And what might that be??

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 2 child comments
    •
  • [–] 5 points 4 days ago (1 child)

    Using the same reference points on earth that GPS uses, that doesn't mean using GPS.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 2 child comments
    •
  • [–] 3 points 4 days ago (1 child)

    That doesn't work too well out in the ocean and lots of other places too. If you can't use your gravity map, you're gonna use GPS for precise position data.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 2 child comments
    •