NDLI: Ultra-wideband radar measurements over bare and snow-covered saline ice

Content Provider	IEEE Xplore Digital Library
Author	Gogineni, S. Kanagaratnam, P. Jezek, K.
Copyright Year	1996
Description	Author affiliation: Radar Syst. & Remote Sensing Lab., Kansas Univ., Lawrence, KS, USA (Gogineni, S.)
Abstract	The authors developed an ultra-wideband radar operating over frequencies from 500 MHz to 18 GHz and used it in conjunction with a plane-wave illuminator to perform radar backscatter measurements over pancake, bare and snow-covered saline ice. The ice was grown in an outdoor pond at the U.S. Army Cold Regions Research and Engineering Laboratory, Hanover, NH. Data were acquired over incidence angles from 0/spl deg/ to 50/spl deg/ with VV and HH polarizations. Data were also collected on surface roughness, snow properties and ice structure. The combination of wide bandwidth and plane-wave illumination allowed the authors uniquely to identify returns from air-snow and snow-ice interfaces. Returns from the snow-ice interface were about 10 dB higher than those from the snow-air interface. At 0/spl deg/ incidence scattering from bare saline ice varied little with frequency over the frequency range from 5 to 18 GHz, whereas scattering from pancake ice increased from about 16 dB at 5 GHz to 27 dB at 18 GHz. In contrast scattering from snow-covered ice decreased by about 10 dB over the same frequency range. For both bare and snow-covered saline ice, the scattering coefficient decreased by more than 40 dB with over the angular region from 0/spl deg/ and 30/spl deg/. The rapid decay of the scattering coefficient is indicative of the presence of a coherent component near vertical and of the dominance of surface scattering over this angular region.
Starting Page	1196
Ending Page	1198
File Size	275448
Page Count	3
File Format	PDF
ISBN	0780330684
DOI	10.1109/IGARSS.1996.516613
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-05-31
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Ultra wideband technology Radar measurements Ice Radar scattering Performance evaluation Backscatter Frequency measurement Data engineering Polarization Rough surfaces
Content Type	Text
Resource Type	Article

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