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nemom t1_j0gsh67 wrote on December 16, 2022 at 3:13 PM

Reply to comment by LegitimateCopy7 in Ground-based alternative to GPS achieves 10 cm accuracy by Vailhem

It's all about coverage. They set up six base stations to cover a plot of land the size of a normal front lawn in the suburbs. Four satellites can cover several US States / European Countries.