Global Positioning System
GPS is an acronym standing for Global Positioning System. It consists of 24 satellites, base station and a receiver. It is mainly used for navigation and tracking. The working of GPS depends on the proper working of three different segments. User Segment is a small mobile device which is capable of communicating to the satellites. The Space Segment consists of the satellites that revolve around the globe transmitting the signal. The Control segment controls the navigation of the satellites. A satellite, at any given point of time, can communicate with at least three different satellites. This process is termed as Trilation. The control segment helps in deciding the place of the user segment and thus a unique place is plotted round the globe.
