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Satellite navigation is a system which makes use of artificial satellites for providing autonomous geospatial positioning. In other words, satellite navigation systems can generate positioning information. Satellite navigation systems can also provide information regarding local time to high precision and can aid in time synchronization.
With the help of transmitted time signals and electronic receivers, satellite navigation can determine a specific location with high precision. However for accurately locating the position, a minimum of four satellites would be required. Electronic receivers make use of signals for analyzing the current local time to high precision. Satellite navigation capable of global coverage is called a global navigation satellite system. The electronic receiver analyzes the time and the distance from each of the satellites to reach the user's receiver antenna. The fourth satellite in the navigation system helps in removing the distance ambiguity involved in the case of three satellites. In fact, the more satellites involved in a satellite navigation system, the higher precision the accuracy that can be achieved.
Satellite navigation systems are more accurate than other navigation options. Being a broadcast system based on radio signals, an unlimited number of people can use it an unlimited number of times, regardless of location. Satellite navigation systems aid in air and sea traffic as well.