When you hear about General Positioning System (GPS) system, you should first consider the GPS receiver. It is the part of the device responsible of processing the signal sent by the satellite in the space to find out your actual location. The receiver is usually placed on the dashboard of your car or underneath it. It renders on a dedicated output device your screen your destination.

The entire GPS is a constellation of about 27 satellites rolling around the center of the Earth at a steady speed. Amongst these satellites, 24 of them are responsible of processing signals emitted by the receiver and the remaining satellites are used for storage purposes on case of an unplanned event. The GPS receiver is responsible of hooking up with satellites used for storage purposes and working out its position from that satellite by computing their distance. The mathematical tenet used for this purpose is named trilateration.

Trilateration can be achieved in two dimensions and also in three dimensions. The rationale of this mathematical principle is to work out a triangle where you are located at the center of it. As soon as the GPS receiver emits its position and makes a connection with other satellites, it immediately works out three nearest points and computes your position.

Three types of GPS receivers can be noticed: those which can be installed in a car, lightweight and mobile GPS receivers and tracking GPS receivers. It is obvious that portable receivers are a huge boon for outdoor activities.

Finally, it is good to know that the actual process of GPS receivers is a little bit more intricate than what was described in previous sections. However, throughout this article, although the main objective was to give a broad overview how they work in theory the next paragraph will delve into advanced details about GPS computations.

From previous sections, we learnt that the GPS receiver computes its distance to the nearest available satellites in space by noticing the time spent by the emission of a given signal from the receiver to the satellite. There are another category of GPS receivers that you have not mentioned throughout this article. In order to overcome the lack of precision of the traditional GPS receiver, differential GPS receivers were born. Their rationale is to estimate the level of GPS errors at a stationary receiver station with a location that was already computed before. Since the Differential GPS hardware at the station is already aware of its own location, it can work out its receiver’s level of errors in a straightforward way. The station then broadcasts a radio signal to all Differential GPS-equipped receivers in the nearby area, providing signal correction information for that area. In general, accessing this correction information makes Differential GPS receivers much more correct and precise than traditional GPS receivers.

The most essential function of a GPS receiver is to pick up the transmissions of at least four available satellites and combine the information in those transmissions with information in an electronic almanac, all in order to figure out the receiver’s position on Earth.

Yes, it is the age of science and technology, advanced computerization and electronic road maps – what you thought would be a dream seen only in secret agent 007’s movies is actually a reality today with the vehicle GPS system and even the intelligent mobile phone with GPS fitted for traveling abroad with ease of a talking road map! For, that is exactly what the international GPS mobile phone is all about – enabling easy navigational aid via the knowledge it gains from various satellites in space, which it transmits to the user so he or she knows just how to get from point A to B or even further on, in a matter of minutes.

Initially developed for the American ministry of Defense, the GPS system was later released for the public use also as it was a boon for senior, single or teen drivers besides parents and spouses wanting to keep a track of the whereabouts of their family and property, namely their precious set of wheels. Guided by the global positioning satellite in space, the magnetic navigation system which was formerly fitted on vehicles to update drivers about their position on a certain route or to tell the owner of the car where the car has been or is currently located, the GPS is an advanced system contained in a small box but big on features.

Whether this is mounted on the car’s dashboard or beneath the carriage, the auto navigation system helps direct the driver to track the vehicle’s location and future routes to take, depending on the command prompt instructions asked for by the driver. In much the same way, the international GPS equipped cell phone works to update the mobile user about where he is located currently in the scheme of a given travel plan and the destination info having been fed in, so it guides the user towards the last point through various set-routes.

The international GPS fitted cell phone offers the unique and convenient advantage of being a ready and accurate travel guide for the person traveling to a foreign land and sometimes, many international holiday makers, students or business travelers purchase the international GPS cell phone for an important trip, especially when going to an exotic locale. This electronically guided cell phone with GPS mechanism is not only far more convenient and space-saving, but always eliminates the fuss of handling paper maps, guide-books and other hard copy versions of directions that can be easily torn or fly-away – something that is not likely with the mobile navigation system of your international cell phone, now, is it? Not only is the mobile navigation system of the international GPS cell phone compatible to foreign languages, it also allows for multiple uses for the phone itself – emailing, making phone calls, playing electronic games, taking photographs and videos, making audio recordings and even storing new data – all in a compact size that is easy to carry with you on any foreign trip!

You can even make your regular cell phone GPS compatible, though it does pay to do some research on the cost factors this may entail for you – so, do enquire the same from your cell phone company before heading off to some pretty, foreign locale.