this post was submitted on 06 Mar 2025
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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.
I fear for the world. You afraid that you're gonna make a wrong turn? Inside of a tunnel? A fuckin' tunnel my guy?
You have clearly never driven on 93 through Boston where the person you replied to said they are from (aka the Big Dig). It is basically an entire highway that is underneath the city. There are many on and off ramps, lanes suddenly become exit only, complex multi-lane exits that branch...it's intimidating. As somebody that has lived in the Boston area for 15 years now, I still mess things up.
Global Positioning System, I sleep
Universal Positioning System, real shit
There was an article today about how they just used GPS on the moon.