A radar-satellite mission by the German Space Centre (DLR) to monitor dynamic Earth-surface processes with high resolution, including the global measurement of forest biomass, using two synthetic-aperture radar instruments. The mission is scheduled for launch in late 2022.

https://www.dlr.de/dlr/en/Portaldata/1/Resources/documents/2016/Tandem-L-Brochure-2016-06.pdf Tandem-L brochure.