Earth observation satellites have completely mapped the entire land surface of Earth for the first time in a German Aerospace Center (DLR) project designed to create the world’s first single-source, high-precision, 3D digital-elevation model of Earth .
The radar systems on two satellites views the ground from two different points in space, achieving depth perception in a manner similar to binocular vision in humans. By mid-2013, the satellites will have imaged the complete land surface area of Earth, roughly 150 million square kilometers, several times.
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