NDLI: On the polarization-dependent signatures of atmospheric and oceanic features in radar images of the ocean surface

Content Provider	IEEE Xplore Digital Library
Author	Romeiser, R.
Copyright Year	1997
Description	Author affiliation: Inst. of Oceanogr., Hamburg Univ., Germany (Romeiser, R.)
Abstract	Multi-polarization radar images of the ocean surface from various experimental campaigns suggest that the backscattered signal is more sensitive to wind field variations at vertical (VV) than at horizontal (HH) polarization. On the other hand, radar signatures of oceanic features like internal waves or underwater bottom topography are often better visible at HH. In this paper, a possible theoretical explanation for these phenomena is discussed. It is shown that polarization-dependent radar signatures are qualitatively consistent with predictions of a composite surface scattering model, where the ratio between modulation depths at HH and VV is determined by the intensity variations of ocean waves in different wave-number ranges. Using a simple scenario of wind and current variations, it is demonstrated that a pair of radar images with dominant oceanic and atmospheric signatures at HH and VV, respectively, can be basically obtained from the model.
Starting Page	1326
Ending Page	1328
File Size	461551
Page Count	3
File Format	PDF
ISBN	0780338367
DOI	10.1109/IGARSS.1997.606437
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-08-03
Publisher Place	Singapore
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Polarization Radar imaging Atmospheric waves Sea surface Surface topography Radar scattering Atmospheric modeling Oceans Radar theory Surface waves
Content Type	Text
Resource Type	Article

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