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Artwork of Global Positioning Satellite orbits

Artwork of Global Positioning Satellite orbits

S740/0026

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Credit

ESA / CE / EUROCONTROL / SCIENCE PHOTO LIBRARY ESA / CE / EUROCONTROL / SCIENCE PHOTO LIBRARY

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This image may not be used to state or imply ESA endorsement of any company or product.

Caption

Global Positioning System. Artwork of the orbits of the Navstar satellites used in the Global Positioning System (GPS). The GPS system uses a constellation of 24 operational Navstar satellites in 6 orbital planes, ensuring that 3-6 satellites are above the horizon at any location at any one time. Small ground-based receivers calculate the user's position by measuring the time it takes for signals to arrive from the satellites. Military receivers have an accuracy of a few metres, whilst the degraded signals intended for civilian use give an accuracy of less than 100 metres.

Release details

Model release not required. Property release not required.

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