Copernicus Sentinel-1 spies Houston from orbit


Credit: contains modified Copernicus Sentinel data (2019), processed by ESA, CC BY-SA 3.0 IGO

Houston, Texas, U.S., is featured in this image captured by the Copernicus Sentinel-1 mission.

The two identical Copernicus Sentinel-1 satellites carry radar instruments to image Earth’s surface. Images acquired with radar are interpreted by studying the intensity of the signal scattered back to the satellite—which is related to the roughness of the ground.
The colors of this week’s image come from the combination of two polarizations from the Copernicus Sentinel-1 radar mission, which have been converted into a single RGB image. Interpreting polarization can help scientists analyze Earth’s surface.
In this composite image, captured on 21 June 2019, the city of Houston appears in shades of white and gray which contrasts with the yellow tones of the surrounding land and the dark…



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