Almost every single person alive on this planet would have come through this term at some time or another. The technology is so popular that it has revolutionized the way we look at maps and locate ourselves, and has become an essential part of our everyday lives. But how does GPS tracking device systems come into existence and how do they work?
Let’s find out:
The term GPS is an expansion for Global Positioning System. This technology was put in place by the US military in 1989 for their own use. But today, there are more civil users across the whole world.
This system uses a network of at least 24 Global Navigation Satellite System (GNSS) network which keeps orbiting the earth and transmitting the signals constantly. This network incorporates using the microwave signals that are passed on to GPS devices to provide info on location, speed, time and direction. Both the real-time and historic navigation data of a journey can be found on a GPS tracking system.
The information that a GPS satellite actually transmits is simply its trajectory and the exact transmission time. A GPS device picks up a signal from at least 3 satellites, and then figures out the exact location. The process is called trilateration: “If the position of the satellites is this, this, and this, my position should be this.” The receiver uses the information and calculates its position in the 3-dimensional space as a set of coordinates.
As the GPS will continue to expand in the future, it will improve and the key here would be making the Global Positioning System even more global.