The Global Positioning System (GPS) is a space-based satellite navigation system that provides location and time information in all weather conditions, anywhere on or near the Earth where there is an uninstructed line of sight to four or more GPS satellites.
The system provides critical capabilities to military, civil and commercial users around the world. It is maintained by the United States government and is freely accessible to anyone with a GPS receiver.
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History Of GPS ?
The Global Positioning System (GPS), originally NAVSTAR GPS, is a satellite-based radio navigation system owned by the United States government and operated by the United States Space Force.
The GPS is a satellite-based navigation system made up of a network of 24 satellites placed into orbit by the U.S. Department of Defense. GPS was originally intended for military applications, but in the 1980s.
The government made the system available for civilian use. GPS works in any weather conditions, anywhere in the world, 24 hours a day. There are no subscription fees or setup charges to use GPS.
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How Does it Work ?
The Global Positioning System is a network of about 30 satellites, roaming in the orbit 20,000 km from Earth.
This system was originally developed by the US government (US).
Its US Army used for navigation.
But at this time any person can receive radio signal from GPS with the help of mobile or any this Type of device.
To make accurate use of GPS, at any time you must have at least 4 satellites 'visible'.
Each of the satellites keeps transmitting signals of its position and current time information at regular time intervals.
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