4 ms·

I've been working on GPS filtering for three years and that's bad even by my standards. Chips with L5 should do a lot to clear that up though.

• cantagi 9y ago
  I have a question for you. If GPS locations in cities are affected by reflections off buildings, wouldn't the effect be deterministic and could you take advantage of that to reduce the noise?
  • jtolmar 9y ago
    It's deterministic, but changes multiple times per city block, so it's hard to build a model that accurately does something about it.
  • gpsGuys 9y ago
    Yes, this is true! If you are interested in working on this kind of thing, please reach out to me via HN messaging.