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Field biologist using a global positioning system

Field biologist using a global positioning system

T540/0088

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Credit

PASCAL GOETGHELUCK / SCIENCE PHOTO LIBRARY PASCAL GOETGHELUCK / SCIENCE PHOTO LIBRARY

Caption

Location by satellite. Male field biologist finding his location using the hand-held receiver of a global positioning system (GPS). The system has a network of 24 GPS satellites, each of which sends out signals about its position and the time. By using the signals from four satellites, the biologist's latitude, longitude, altitude and local time are displayed. Photographed in Guyana.

Release details

Model release not available. Property release not required.

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