this post was submitted on 06 Mar 2025
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Nah the idea is sound. As someone else said, GPS is incredibly fragile. Also very terrestrial...it doesn't work once you leave the atmosphere.
This will probably be another SpaceX grift, but there are alternative technologies that are more resilient to attack. From military/defense perspective (the original reason for GPS), that's pretty important.
No, not really. The GPS signal isn't designed to penetrate concrete, no. But that doesn't make it fragile.
Considering it was never meant to...that's really not that goddamn weird. It's a global positioning satellite system. So clearly for it to work you have to be on the fuckin' globe...
Having functional GPS in a tunnel would be very nice...as someone who drives through Boston and fucking hates tunnels.
But that's not what I meant by fragile. I meant it can be disrupted/jammed fairly trivially.
There's no reason why some sort of augmentation system couldn't improve the navigation situation with the big dig. Stick some low power beacons that provide GPS-like signal in the tunnel based on their predetermined location and we'll have GPS accounting for special relativity, general relativity and continental drift.