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Since September 2006 SHARAD (SHAllow RADar) is mapping the distribution of water, liquid and solid, in the upper portions of the Martian crust, the SHAallow RADar (SHARAD) is active. Upon the instrument data acquisition an appropriate processing has to be performed to discriminate the Martian subsurface echo from the surface one. The detected subsurface signal is then processed with a dual frequencies...
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