Major Types Of GPS Units
July 17th, 2007GPS, or Global Positioning System, has become a widely used aid to navigation worldwide. It is a useful tool for map-making, land surveying, commerce and scientific uses. GPS devices communicate with a constellation of satellites managed by the US Air Force orbiting over the earth to establish the exact coordinates of the device via triangulation calculations. GPS units are typically accurate to within a few meters if they are in range of good satellite reception. When coupled with complementary technologies modern day GPS units can serve a wide range of functions like automobiles, motorcycles and even used for finding fish. Many are specially designed to serve different needs and purposes.
Learn more about the major Types of GPS units at GPS Reviews.