TanDEM X marks 15 years mapping Earth in 3D
Exactly 15 years ago, in December 2010, the German TanDEM-X mission began routine radar imaging of Earth to produce a global digital elevation model, launching a long-running Earth observation program. Over six years, data from the twin radar satellites were processed into a consistent, high-precision digital elevation model that covers all land surfaces on the planet. This elevation model has s