88
Quantum alternative to GPS navigation will be tested on US military spaceplane
(theconversation.com)
this post was submitted on 15 Aug 2025
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It's not really an alternative to GPS. It has no idea where on earth you are, it simply accurately tracks your motion through the world but it has no idea where that motion is occurring, you have to start off with a known starting point, then it tracks your motion to work out your current location. But it is only as accurate as the accuracy of the starting point, if that's off by 400 m then so will be the result.
It's basically a very good inertial navigation system, plus this isn't the first time it's been tested it's been tested on ships and planes before.
It's not going to replace GPS for commercial purposes because there's very few scenarios where you don't have a GPS up link. But it'll be useful is in situations where that's not possible like on submarines or yeah in space. It isn't like your car is ever going to use this though.
Great for missiles
And in today's world, drones.