GPS GLOBAL POSITION SYSTEM By José Ángel Trancón Rodríguez What is it? The global positioning system (GPS) is a system that allows the determination of the position of an object with an accuracy of up to centimeters throughout the Earth, although the usual thing is a few meters of precision. UTM (East, north, altitude, spindle, hemisphere) 675687.407m, 4301432.127m, 229.943m, 29, North The system was developed, installed and employed by the United States Department of Defense. To determine the positions on the globe, the GPS system uses 24 satellites and uses trilateration. How does it work? When it is desired to determine the position, the receiver locates a minimum of three satellites in the network, and calculates the time it takes to get the signals to the equipment, thereby calculating the distance of each satellite to the measurement point. Known distances, determine the position with respect to satellites. Knowing the coordinates of each of them by the signal they emit, the actual coordinates of the measurement point are obtained. Another systems • The Soviet Union constructed a similar system called GLONASS, now managed by the Russian Federation. • The European Union is currently developing its own satellite positioning system, called Galileo. • In turn, the People's Republic of China is implementing its own navigation system, the so-called Beidou. Example of use of GPS in everyday life • To drive us in a vehicle. • To locate people of places through applications in the cell. • For civil engineering works.