Coherent and Incoherent Clutter Reduction Techniques to Sound Ice from High Altitudes

Conference: EUSAR 2012 - 9th European Conference on Synthetic Aperture Radar
04/23/2012 - 04/26/2012 at Nuremberg, Germany

Proceedings: EUSAR 2012

Pages: 4Language: englishTyp: PDF

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Li, J.; Gogineni, S.; Paden, J.; Leuschen, C.; Rodriguez-Morales, F.; Crowe, R.; Gomez, D.; Hale, R. (Center for Remote Sensing of Ice Sheets (CReSIS), The University of Kansas, 2335 Irving Hill Road, Lawrence, KS)

Fine-resolution in three dimensions is required to reduce strong surface clutter encountered in sounding and imaging polar ice sheets from highaltitudes. We obtained fine range and along-track resolutions by choosing radar operation frequency and bandwidth and by synthesizing a long aperture with the forward motion of aircraft, respectively. In the cross-track dimension, we developed coherent and incoherent clutter reduction algorithms to effectively reduce cross-track clutter from data collected with limited-size antenna arrays. In this paper, we describe the radars and algorithms and report the successful high-altitude measurements of thin and thick low-loss ice over the Greenland and Antarctic ice sheets.