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Comment by throw0101d

2 days ago

Both: they broadcast not the location but the orbital characteristics (ephemeris), and devices can save the last received value. As the satellites get 'perturbed' in orbit, their orbital data is updated and re-broadcast.

* https://gssc.esa.int/navipedia/index.php/GPS_Navigation_Mess...

* https://www.e-education.psu.edu/geog862/node/1737

* https://gssc.esa.int/navipedia/index.php/GPS_and_Galileo_Sat...

* https://en.wikipedia.org/wiki/Ephemeris

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