Existing GPS satellites orient themselves by ground stations, so we'd need at le... | Hacker News

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		yellowapple on July 3, 2015 \| parent \| context \| favorite \| on: Compasses don't work on Mars, so how do you naviga... Existing GPS satellites orient themselves by ground stations, so we'd need at least some ground presence. Said presence doesn't have to be manned, though.

JoeAltmaier on July 3, 2015 [–]

Or they could orient by celestial navigation. Or have their position measured remotely and updated from Earth.

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