It combines a conventional global positioning system (GPS) signal with those of other sensors - accelerometers and gyroscopes - to pinpointa car's location to within 2m (6ft 6in).
Just as you could use the Doppler Effect to pinpoint the location of a satellite flying overhead, you could also employ satellite signals to find your own location on the ground.
The latest generation of Opticom gear does away with infrared in favor of a combination of cellular radio and Global Positioning System links, which can pinpointa vehicle's location and speed.
Pricing information aside, utilities and grid operators could more accurately pinpoint the location of a problem in the electrical network--eliminating the need for repair crews to scramble for hours to determine where a power failure has occurred.
And that depends on being able to see the lower-energy radiation, in order to pinpoint what it was that exploded (gamma rays are impossible to focus, so the location of a burst is known only approximately).