Surface Clutter Suppression Techniques Applied to P-band Multi-Channel SAR Ice Sounder Data from East Antarctica

Chung-Chi Lin, David Bekaert, Nicolas Gebert, Florence Heliere, Christopher Buck, Tania Casal, Malcolm Davidson, Jørgen Dall, Anders Kusk, Steen Savstrup Kristensen, Juan Mosig, Jean-Francois Zürcher

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Abstract

Radar ice sounding allows for the retrieval of ice depth and provides information on ba-sal topography, basal conditions, flow, and layering. In the prospect of a possible future satellite ice sounding mission, surface clutters are expected to severely hamper measurement of radar ech-oes from the depth due to the unfavourable observation geometry. Synthetic aperture radar (SAR) processing enables to attenuate surface clutters in the forward and backward directions, but not in the across-track directions. Thus, additional across-track clutter cancellation is a crucial step for extracting weaker subsurface radar echoes. ESA’s P-band POLarimetric Airborne Radar Ice Sounder (POLARIS), recently upgraded with a larger antenna of 4 m length, enables simultaneous reception of up to 4 sub-aperture channels in across-track. Laboratory of Electromagnetics and Acoustics of Swiss Fed. Institute of Tech., Lausanne, developed and built the radiator-elements of the enhanced POLARIS. Several datasets were acquired in the multi-channel configuration during the Feb. 2011 campaign over East Antarctica. The POLARIS instrument will be briefly introduced, followed by an overview of the sounding campaign. Finally, different surface clutter suppression approaches, based on topographic data, are presented and compared. Clutter rejection performance is quantified through comparison with original data.
Original languageEnglish
Publication date2012
Number of pages9
Publication statusPublished - 2012
Event32nd EARSeL Symposium 2012 - Royal Mykonian Hotel, Mykonos, Greece
Duration: 21 May 201224 May 2012
Conference number: 32
http://www.earsel.org/symposia/2012-symposium-Mykonos/

Conference

Conference32nd EARSeL Symposium 2012
Number32
LocationRoyal Mykonian Hotel
CountryGreece
CityMykonos
Period21/05/201224/05/2012
Internet address

Keywords

  • Radio echo sounding
  • Ice sheet
  • Antarctica
  • Surface slutter suppression
  • Multi-channel processing

Cite this

Lin, C-C., Bekaert, D., Gebert, N., Heliere, F., Buck, C., Casal, T., ... Zürcher, J-F. (2012). Surface Clutter Suppression Techniques Applied to P-band Multi-Channel SAR Ice Sounder Data from East Antarctica. Abstract from 32nd EARSeL Symposium 2012, Mykonos, Greece.