GPS Illustration Title GPS-Maps
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shows aerial photo taken of the field An aerial photograph was taken of a field.


All-terrain vehicle being driven Then Ron Gehl and Andy Steinert drove an all-terrain vehicle or rover on transects back and forth across this field. 


shows a topographic map created by the field computer The field computer recorded positions every second and created a topographic map. 


Topographic maps give the elevation, longitude, and latitude of a specific area of land.  Each area is then analyzed against the other area to give a detailed map with the aerial photograph below.  aerial and topographical maps and analysing

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