Navigation is a field of study that focuses on the process of monitoring and controlling the movement of a craft or vehicle from one place to another. The field of navigation includes four general categories: land navigation, marine navigation, aeronautic navigation, and space navigation.
A satellite navigation or satnav system is a system that uses satellites to provide autonomous geo-spatial positioning. It allows small electronic receivers to determine their location (longitude, latitude, and altitude/elevation) to high precision (within a few centimeters to metres) using time signals transmitted along a line of sight by radio from satellites.
Gee, sometimes written GEE, was a radio navigation system used by the Royal Air Force during World War II.It measured the time delay between two radio signals to produce a fix, with accuracy on the order of a few hundred metres at ranges up to about 350 miles (560 km).
The word navigation was invented in the 15th century from the Latin word navis which means "ship" and is found in other Indo-European languages. Navigation is literally "art of ship mastery" but is also used for 'finding one's way'. The Global Positioning System is the main tool for it.
Car navigation allows an automobile driver to see where he or she is on a map at any given time. Automobile navigation can rely on GPS (Global Positioning System), or it can be DVD- or data-based. GPS-bsed navigation uses radio signals from special satellites that send their position and the time of transmission. The GPS receiver catches the ...
Astronomisk navigation bygger att man med hjälp av en sextant mäter höjden till olika himlakroppar och med hjälp av en rättvisande klocka får reda på timvinkeln. Genom slagning i tabellverk utifrån ett räknat läge kan man få reda på var de aktuella himlakropparna borde befinna sig om det räknade läget är korrekt.
Traditional Polynesian navigation was used for thousands of years to make long voyages across thousands of miles of the open Pacific Ocean. Navigators travelled to small inhabited islands using wayfinding techniques and knowledge passed by oral tradition from master to apprentice, often in the form of song.
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A navigation bar (or navigation system) is a section of a graphical user interface intended to aid visitors in accessing information. Navigation bars are implemented in file browsers, web browsers and as a design element of some web sites.
A navigation light, also known as a running or position light, is a source of illumination on a vessel, aircraft or spacecraft. Navigation lights give information on a craft's position, heading, and status. Their placement is mandated by international conventions or civil authorities. Navigation lights are not intended to provide illumination ...