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Palm Island, 'The Palm Jumeirah' in Dubai

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Palm Island, 'The Palm Jumeirah' in Dubai
Download this image: Hi-Res JPEG (0.28 MB)
For this interferogram, two images of the same scene, taken from slightly different positions, were superimposed with precision phasing (this establishes what is known as the baseline).

This image of the Palm Jumeirah taken by the TerraSAR-X Earth observation satellite is just such a superimposed composite formed from two images taken at different times, June 2007 (red) and April 2008 (green). Differences are depicted in blue, and reflect the changes during the intervening period.

Credit: DLR.