Okay for serious, if an apocalypse-like event happened on Earth, for how long would GPS continue to be usable/useful? Let's say all the ground stations are suddenly unmanned
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Two weeks IIRC. The satellites need to be manually adjusted apparently.
Thank you for being the first person with a direct answer! This actually helps me a lot. Do you have a source by any chance
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This seems sensitive enough that there wouldn’t be an authoritative source. That info was already third-hand, and seems to be wrong. Apparently what happens is just that the error gets higher once they don’t have their own position. Presumably, one could work around this on 1/2
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2/2 the ground. These people claim they would stay up a while, but maybe only work around their 12 year design time. Maybe someone could take over updating them for another 30 years or so?https://www.reddit.com/r/space/comments/1dthhh/without_human_intervention_how_long_would_gps_last/ …
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