2500 digital map, GPS, and traditional ground survey of a point. Points do not coincide after plotting.?
A 2500 scale digital map was prepared from a 1/10,000 photography. Two ends of a wall was surveyed by a double frequency GPS and by theodolite. All the three methods do not converge at the ends of the wall on the map. What could be the cause of the deviations
gps survey data containd a small + – error factor + or – as much as 300 feet
Auto- GPS and metadata digital photography features
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