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Airborne Dual-Polarization Observations of the Sea-Surface NRCS at C-band in High Winds
IEEE Geoscience and Remote Sensing Letters (2013)
  • Joseph W Sapp, University of Massachusetts - Amherst
  • Stephen J Frasier, University of Massachusetts - Amherst
  • Jason Dvorsky, University of Massachusetts - Amherst
  • Paul S Chang
  • Zorana Jelenak

Airborne dual-polarization observations of sea-surface normalized radar cross-section (NRCS) were conducted over the North Atlantic during Jan–Feb 2011. Observations were made using the University of Massachusetts’ Imaging Wind and Rain Airborne Profiler (IWRAP) radar system installed on the National Oceanic and Atmospheric Administration’s (NOAA) WP-3D research aircraft during several winter storm events to determine the high-wind response of the sea-surface NRCS for both horizontal and vertical polarizations. During the flights, the aircraft performed several constant-roll circle maneuvers to allow collection of NRCS over a range of incidence angles. We find consistency with prior reports in the polarization ratio observed at moderate incidence angles at the winds encountered. For larger incidence angles, we observe a measurable decrease in polarization ratio with increasing wind speed.

  • C-band,
  • ocean winds,
  • polarization ratio,
  • scatterometry
Publication Date
July, 2013
Publisher Statement
© 2012 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Citation Information
Sapp, J.W.; Frasier, S.J.; Dvorsky, J.; Chang, P.S.; Jelenak, Z., "Airborne Dual-Polarization Observations of the Sea Surface NRCS at C-Band in High Winds," Geoscience and Remote Sensing Letters, IEEE, vol. 10, no. 4, pp. 726—730, July 2013. DOI: 10.1109/LGRS.2012.2220118.