Many of us rely on GPS (Global Positioning System) to estimate travel times, find our way to new places, avoid traffic congestion, keep track of the kids, and generally avoid getting lost.
But it's not always the most reliable of systems, especially in built-up areas where it's difficult to get a straight line of sight to and from a satellite.
A combination of radio transmitters and fiber-optic networks form the foundation of the system, with some smart tweaks on top. One of the key components of the new network positioing system is a synchronized atomic clock: perfect timing means more precise positioning. Essentially, the fiber optic cables act as connections that keep everything in sync, and accurate to one billionth of a second.
This additional bandwidth overcomes one of the biggest problems with standard GPS, which is that radio signals get reflected off buildings and can quickly become confused.
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