How Earth 3D map will help us???

German organization of space inquiry (DLR) has prepared 3D models of two region of world through the picture getting from artificial stars.That are available for common people on net.The two region whose maps are prepared that are fulenders ranges national park of Australia and bad land national park of America.Two radars satellites of Germany are performing the work of maping the earth.This project started from June 2010.The artificial stars named x-Tam Dem and x- Terra sar has travel led 800 million km after revolving around the earth. The model of American and Australia national park are available on the science server of x-Tam Dem project of dollar.