All About How GPS Receivers Work

Wherever you may travel, whether driving on the road or sailing on the vast reaches of the ocean, Global Positioning System (GPS) receivers always come in handy to keep you right on track. However, have you ever thought to yourself how these seemingly simple devices manage to keep you from getting lost? Read on for some valuable information on how these amazing gadgets work.

To begin with, each GPS is connected to a system of around 27 satellites orbiting the Earth. All receivers have a fixed almanac that enables them to determine the location of each space station at any given time. They then pick up data using a technique called three-dimensional trilateration.

Whenever you attempt to find your location, your GPS collects signals from at least three closest satellites. Each space station will then accurately calculate the distance of your receiver. They do this by determining the time it takes before your equipment's signal (in the form of radio waves) reaches them. With this method, newer versions of GPS devices are able to identify almost the exact position of a single person.

Nowadays, there are also a lot of technologies available that could make the whole process faster and more accurate. One of these is the atomic clock. Typically, in order to get the best results, these accessories should be part of both the receiver and the satellite. However, as it is too expensive at the moment, only the latter one has it installed, while the former has a less powerful device called a quartz clock instead. Nevertheless, scientists are already speculating that in the near future, GPS equipment that can determine the location of even the smallest creature with pinpoint accuracy will be available at an inexpensive cost.