this post was submitted on 29 Aug 2026
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Its better performance than existing non-gps systems - not better than GPS. For ships , being within 1nm after thousands of miles of travel is really well performing. Obvious the real play here is weaponry though, since GPS isnt reliable in warfare and on-board sensors can do the detail work of target identification once in an area, the hard part is a way for them to self navigate accurately over long distances without GPS.
The realer play is submarines. You don't get any satellite signal at all underwater. Before this it was only INS or dead reckoning.
I suspect submarines can also use bottom facing radar to track features on the sea floor. But tracking the gravity should be even better.
Radar doesn't work underwater. Sonar does, though most subs want to be stealthier than constantly shouting downwards.