[cantagi]

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]

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]

Yes, this is true! If you are interested in working on this kind of thing, please reach out to me via HN messaging.