What is GPS (Global Positioning System)?
GPS is the current system used to track you when you leave your home. The system relies on 24 satellites that orbit the earth. You will wear, or must carry, a device that transmits an encoded signal to the satellites that gives your precise time, location (accurately within a few feet), and movement.
GPS means Global Positioning System. GPS is dependent upon more than 24 satellites to function. Cost of running Global Positioning System has touched seven hundred and fifty US dollars per year! With use of GPS hardware and help of satellites one can come to know location of device. Using this technology various mapping, land surveying and scientific applications can be developed. GPS hardware locates itself using trilateration which is process of calculating position measuring widths of imaginary triangle formed between one unknown and two know dot positions. The devices like NavMan are result of Global Positioning System (GPS). New possibilities in this field are endless.
