GPS receivers are devices that get signals from orbiting satellites in order to determine the location or geographic position. There are very diverse applications of the Global Positioning System as the GPS receivers are used not only by the aviation, the marine and the military but by civilian consumers as well. The satellites on which the receivers depend circle the globe twice a day, and they are arranged in such a way on the orbit, that at any moment of the day, four of them should be present on the visible sky allowing one to find the right location or direction. Although initially, the system was planned for the use of the US military alone, it was soon opened to the public for individual, civilian applications.
There are two types of GPS receivers available for purchase: the stand alone GPS receivers and the items that require computer connection in order to function. The stand alone devices insure great mobility, being designed for cars mainly. Such GPS receivers include a pre-installed software with interactive street maps, route info, and minute details on routing directions. Some units even allow for updates on the local attractions in certain area. Some of the best sold products in this category are manufactured by Navigon, Garmin, TomTom, Mio or Magellan Navigation.
The devices that do not function independently require connection to a laptop, computer, PDA or smartphone. The connection of the two devices together can be established through Bluetooth technology, or with a USB or serial cable. You may have to get the navigation software separately from the GPS unit, because less advanced devices do not have it included. Although these GPS receivers seem to be more difficult to work with in the first place because of the installation, they are nevertheless preferred by users because they are cheaper.
While our ancestors had to read the stars to find their way, we can now manage to travel in the urban jungle and all over the world with automatic assistance from GPS receivers. Not all devices come with full world maps, particularly if you buy GPS modules. The Google Maps program can be used for downloading data for a certain geographical area or country. Geo-spatial orientation will no longer be a problem when you have such a travel companion to tell you the best and fastest way to get to destination without the trouble of getting into traffic jams.
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When the author isn’t using her GPS receiver, she’s a fan of best psychics, theSeattle HCG diet, and uses a Cadillac XLR windscreen windblocker wind deflector.