The Transition from Weak to Strong Diffuse Radar Bistatic Scattering from Rough Ocean Surface

Voronovich, Alexander G.; Zavorotny, Valery U.

doi:10.1109/TAP.2017.2752219

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i

The Transition from Weak to Strong Diffuse Radar Bistatic Scattering from Rough Ocean Surface

2018
By Voronovich, Alexander G. ; Zavorotny, Valery U.
Source: IEEE Transactions on Antennas and Propagation ( Volume: 65, Issue: 11, Nov. 2017)

[PDF-1.34 MB]

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Journal Title:

IEEE Transactions on Antennas and Propagation
Personal Author:

Voronovich, Alexander G. ; Zavorotny, Valery U.

Voronovich, Alexander G. ; Zavorotny, Valery U. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; PSL (Physical Sciences Laboratory)

OAR (Oceanic and Atmospheric Research) ; PSL (Physical Sciences Laboratory) Less -
Description:

Many of the currently used models of scattering from a rough ocean surface are designed for the regime of strong diffuse scattering that takes place at large Rayleigh parameter Ra. Using them for the case of weak, or even moderate diffuse scattering that is characterized by Rα≲ 1 would lead to an incorrect result. At the same time, for practical applications, it is important to describe the transition from partially coherent scattering to completely noncoherent, strong diffuse scattering in terms of the bistatic radar cross section σ 0 . This situation may occur for scattering of global navigation satellite system (GNSS) signals or other signals of opportunity from a rough ocean surface under weak winds, or from ice. In this paper, we obtain an expression for σ 0 for the case of weak-to-moderate diffuse scattering using a formulation based on the small slope approximation of the first order. For a reasonable range of Ra, calculations can be quickly performed using standard desktop computers. We demonstrate results of such calculations for bistatic radar scattering for L-band at low-to-moderate Ra and its transition to σ 0 at large values of R α .
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Radar Remote Sensing Rough Surfaces Sea Surface
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IEEE Transactions on Antennas and Propagation ( Volume: 65, Issue: 11, Nov. 2017)
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https://doi.org/10.1109/TAP.2017.2752219
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Journal Article
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urn:sha256:91c1cebf857114a90608c2b183b4d305ab62937561286cbaf6e9d7e3a9496734
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The Transition from Weak to Strong Diffuse Radar Bistatic Scattering from Rough Ocean Surface

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