4 ms·
How are receivers sensitive enough for this to work? A GPS watch can tell the difference between a few billionths of a second? > It only takes light one billio
by groggo 5y ago
How are receivers sensitive enough for this to work? A GPS watch can tell the difference between a few billionths of a second?
> It only takes light one billionth of a second to travel the distance of around 1 foot.
- zarzavat 5y ago1 billionth of a second is an age in the world of radio signal processing. That's 1 GHz. Wifi goes up to 6GHz. 5G gets up to ~30GHz!