At the heart of GPS is the ability to measure the distance from a receiver to several satellites. There are always 4 to 8 satellites visible at any given time. Each satellite sends out a signal, which ...

Perhaps you’re occasionally checking your smartphone’s built-in mapping software while driving to a remote trout stream, or using Google Earth on a home computer to scout out new hunting and fishing ...

Our everyday GPS struggles in “urban canyons,” where skyscrapers bounce satellite signals, confusing even advanced navigation ...

GPS satellites transmit 'precise time' and 'satellite position' to Earth. There are more than 30 GPS satellites in operation, and accurate position information can be calculated by receiving signals ...