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Learn about the history, technology, and applications of GPS, a satellite-based radio navigation system owned by the United States government and operated by the US Space Force. GPS provides geolocation and time information to anyone with a GPS receiver anywhere on or near the Earth.
- Indian Regional Navigation Satellite System
The Indian Regional Navigation Satellite System (IRNSS),...
- Satellite-Based Radio Navigation
The United States' Global Positioning System (GPS) consists...
- List of GPS Satellites
Samples of three GPS satellites' orbits over a five-year...
- GPS (Disambiguation)
GPS is the Global Positioning System, a satellite-based...
- Block Iiif
GPS Block IIIF, or GPS III Follow On (GPS IIIF), is the...
- Gladys West
Gladys Mae West (née Brown; born October 27, 1930 [1]) is an...
- Iiia
GPS Block III (previously Block IIIA) consists of the first...
- Satellite Navigation Device
A satellite navigation device, satnav device or satellite...
- Geolocation
Principles of geolocation using GPS. Geopositioning is the...
- GPS signals
GPS signals are broadcast by Global Positioning System...
- Indian Regional Navigation Satellite System
- How It Works
- History
- Other Systems
A GPS unit takes radio signals from satellites in space in orbit around the Earth. There are 31 satellites which are 20,200 kilometres (12,600 mi) above the Earth. The orbital period is 11 hours and 58 minutes. Each circle is 26,600 kilometres (16,500 mi) radius due to the Earth's radius. Far from the North Pole and South Pole, a GPS unit can recei...
Various radio navigation systems have been in use since the middle 20th century. In the 1960s, experiments put the radio transmitters in satellites. A new system, at first called Navstar, was designed in the 1970s by the United States Air Force. It became GPS and was only used by the U.S. military. In 1983 President Ronald Reagan made an order to a...
There are other systems that act in the same way. One was put in space by Russia, called GLONASS. Another that is not yet done is named for Galileo and built by the European Union.
Learn about the GPS signals broadcast by Global Positioning System satellites to enable satellite navigation. Find out the characteristics, frequencies, codes, and formats of the civilian and restricted signals.
Learn about positioning systems, which determine the position of an object in space, and their applications. Compare GPS, the US military system, with other global, regional, local, indoor and high performance systems.
Learn about the history, classification, principles and applications of satellite navigation systems, including GPS, GLONASS, Galileo and others. Find out how satellites use radio signals to provide positioning, navigation and timing information.
Oct 19, 2023 · Learn about GPS, a network of satellites and receiving devices used to determine the location of something on Earth. Find out how GPS works, who uses it, and what are its applications and challenges.
A satellite navigation device, satnav device or satellite navigation receiver is a user equipment that uses one or more of several global navigation satellite systems (GNSS) to calculate the device's geographical position and provide navigational advice. Depending on the software used, the satnav device may display the position on a map, as ...
