Starting from the signal from orbiting satellites, GPS receivers are able to determine the geographic position or location in real time. 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.
In terms of structure, you can choose between two types of GPS receivers: 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. Pre-installed software with route info, routing directions and maps is part of the built-in features of the most advanced GPS receivers. For certain regions, you can also get information on points of local attraction with the GPS devices. 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. People nevertheless buy these GPS receivers because they are cheaper, although they raise a bit of a challenge in terms of installation.
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. GPS modules will not include world maps, but that is hardly an inconvenience. 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.