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Title: NSF COLDEX/Open Polar Radar Example Delay Doppler Classification of Englacial Reflectors
<p>This is an example line of NSF COLDEX MARFA ice penetrating radar data (CLX/MKB2o/R66a) that has been processed to provide azimuthal information about radar echos from below, and to the front and back of the aircraft. The input was 1 meter slow time resampled coherent range record with phase intact. The data were pulse compressed and an azimuth fast Fourier transform was used to convert to azimuth angles in 1 km chunks, then slices at -19°, +19˚ and nadir were selected for these numpy arrays. These can be displayed as an RGB image with Blue = nadir, red = forward and green = rear</p> <p>The nadir slice should dominate specular echos, as seen with englacial reflecting horizons; where this trades to more balanced returns across all three channels, scattering dominates, as with rough bed rock or volume scattering. A gmt text file contains information about where this transition occurs in the ice column.</p> <p>Details in delay Doppler processing can be found in <a href="http://pds-geosciences.wustl.edu/mro/mro-m-sharad-5-radargram- v1/mrosh_2001/document/rgram_processing.pdf">Campbell et al., 2014</a>; the idea for using this approach for looking at englacial structure was discussed by <a href="https://doi.org/10.5194/egusphere-egu23-2856">Arenas-Pingarrón, Á. et al., 2023</a>. Details of HiCARs/MARFA focused processing can be found in <a href="http://dx.doi.org/10.1109/TGRS.2007.897416">Peters et al., 2007</a>.</p>  more » « less
Award ID(s):
2127606 2019719
PAR ID:
10607883
Author(s) / Creator(s):
; ; ;
Publisher / Repository:
Texas Data Repository
Date Published:
Subject(s) / Keyword(s):
Earth and Environmental Sciences Computer and Information Science
Format(s):
Medium: X Size: 631300; 35981; 1819633 Other: image/png; application/octet-stream; application/x-netcdf
Size(s):
631300 35981 1819633
Location:
Antarctica
Right(s):
Creative Commons Zero v1.0 Universal
Institution:
University of Texas Institute for Geophysics
Sponsoring Org:
National Science Foundation
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