2 thoughts on “How Does GPS Work?

  1. I’ve been enjoying your new series.

    However, an error on this episode. GPS satellites are not geosynchronous:

    From: https://en.wikipedia.org/wiki/Global_Positioning_System

    Orbiting at an altitude of approximately 20,200 km (12,600 mi); orbital radius of approximately 26,600 km (16,500 mi),[75] each SV makes two complete orbits each sidereal day, repeating the same ground track each day.[76] This was very helpful during development because even with only four satellites, correct alignment means all four are visible from one spot for a few hours each day. For military operations, the ground track repeat can be used to ensure good coverage in combat zones.

    You may want to edit your statement out of the episode.

    1. Thanks for the note, Dave. Seems we have a topic for our first corrections show 😉

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