TerraSAR-X

TerraSAR-X is a high-resolution X-band synthetic aperture radar (SAR) mission operated by DLR, launched on 2007-06-15 into a sun-synchronous near-polar orbit at approximately 514-515 km altitude with an 11-day repeat cycle.^[1][2] The mission was developed under a public-private partnership with Airbus DS, which holds commercial exploitation rights and supports commercial tasking access.^[1] TerraSAR-X carries an X-band SAR instrument offering multiple imaging modes including high-resolution Spotlight, StripMap, and wide-area ScanSAR modes reaching swaths of up to 100 km.^[3] The instrument design and system architecture are described by Werninghaus and Buckreuss (2009).^[4] The mission has operated beyond its original design life and remains in an extended operational phase as of 2026-06-14.^[1] Applications include ground subsidence measurement via interferometry, disaster damage assessment, sea-ice monitoring, and land-cover change detection.^[1][4] The companion TanDEM-X mission, launched in 2010, operates alongside TerraSAR-X to generate global digital elevation models through bistatic SAR.^[1]