The instrument also has swath widths of 10km (Spotlight), 30km (Stripmap) and 100km (ScanSAR). The TanDEM-X SAR instrument has multiple modes such as Spotlight, Stripmap and ScanSAR each having a resolution of 1.2m x 1m- 4m, 3m x 3m-6m, and 16m x 16m, respectively. There is also a Laser Communications Terminal (LCT) that demonstrates an optical link that is a part of an experimental broadband data relay transmitting 300 Mbit/s from TanDEM-X to the ground segment. TanDEM-X also includes a Tracking, Occultation and Ranging (TOR) payload that consists of a dual-frequency Integrated GPS Occultation Receiver (IGOR) functioning as an independent tracking technique via the Laser Retro Reflector (LRR). The sensor measures a multitude of processes including Albedo and reflectance, landscape topography, multi-purpose imagery of land and ocean, ocean topography and currents, sea ice cover, edge and thickness, snow cover, edge and depth, and vegetation. TanDEM-X is identical to its twin, TerraSAR-X, and has one X-band Synthetic Aperture Radar that collects high-resolution images for the monitoring of land surfaces and coastal processes, specifically for agricultural, geological, and hydrological applications.
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