Satel­lite twins Ter­raSAR-X and Tan­DEM-X

Satel­lite twins Ter­raSAR-X and Tan­DEM-X
Satel­lite twins Ter­raSAR-X and Tan­DEM-X
The satellite twins TerraSAR-X and TanDEM-X fly in close formation – sometimes separated by only a few hundred metres – and thus acquire data for digital elevation models.