History of GPS (global positioning system)

GPS or global positioning system has been operational since December 1993, but its history is much more to the late 1940s when land based navigation as Decca Navigator began. This, while that planted the seed of inspiration would be another step forward until the release of 1957 the first Sputnik by the Soviet Union showed that satellites were a possibility.

Initially the system was only for military use, but that changed in 1983 when a Soviet interceptor aircraft shot down a civilian airliner in restricted Soviet space killing everyone aboard, once the ship had mistakenly drifted naturally. This was something that could have prevented the GPS and then President Reagan soon announced that GPS would be available for everyone, once was full.

GPS is a system of controlled satellite navigation which is used by the public in general and military alike. To the public in general is a useful tool, a step forward for the dimensional and none interactive maps that some people find difficult to read and follow. There are many brands of GPS receivers, and each provides different features, some of which even may be unrelated to GPS.

GPS devices prices start at around $100 for a basic device which is monochrome, and hand and increase to more than $2000 for a larger, with a greater number of features color device. Is more basic however, GPS is not an aid stand alone, or navigation.

Downstream devices would be a laptop that could include preloaded maps of the country of purchase, waterproof GPS navigation tool and has a display with backlight LCD. Or for similar pricing a basic GPS device with colour display, orientation to tell him when what turns voice and what streets, the power to add new maps and can have a choice of languages and the choice of the voice that uses GPS.

Around 200 dollars add in features a touchscreen device GPS to enter addresses and access menus, as well as the ability to blue tooth. Another step forward and see features such as AAA tour books added automatic and redirection; and an important for a GPS Navigator because you can never be sure that when you miss a turn and need to return to track through an alternative route feature.

In the end, GPS devices include things such as speech recognition, allowing you to speak your start and end points and points of interest in better. They could also include non-GPS such as DVD players, piers iPod features and give even trafficking in updates.

Despite the fact that many people do not realize it, receivers GPS have been present for some time many cell phones and enable that phone locate accurately, when the police request such information. In this way the GPS has been used to help find missing persons and attempts has tried to use it to help victims of child abduction.