Radar depth sounding employs low frequency radar operating at several hundreds of KiloHz to MegaHz frequencies and has been applied to the field of subsurface investigations on both the Earth and Mars. Over Antarctica and Greenland, the Multichannel Coherent Radar Depth Sounder (MCoRDS) onboard the NASA Operation IceBridge missions[1] has collected radar echograms since 2009 showing the subsurface ice layers caused by ice accumulation and interrupted by subsurface ice flow. Over the Martian polar regions, subsurface layers are also detected by low frequency radar systems, i.e. MARSIS (Mars Advanced Radar for Subsurface Ionosphere Sounding on board ESA’s Mars Express) and SHARAD (SHAllow subsurface RADar on board NASA’s Mars Reconnaissance Orbiter) [2]–[5]. Although these subsurface layers are formed by different mechanisms, there is a need for fast and automatic information extraction from these subsurface radar reflectors with the larger and larger coverage acquired nowadays. The detection and automatic extraction of subsurface layers is very important preliminary work to future studies of surface evolution and past climate. This study presents a method based on the Radon Transform (RT) to automatically extract the subsurface layers over Greenland on Earth and South Polar Residual Cap on Mars.
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