Effective Surface Roughness in Radar Ocean Backscattering

In this paper, we proposed a modulated correlation function to characterize the multiscale property of the sea surface and adopted it in the AIEM (Advanced Integral Equation Model) to calculate the radar backscattering. Comparisons of NRBCS (Normalized Radar Backscattering Cross Section) with GMFs (...

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Vydáno v:IEEE transactions on geoscience and remote sensing Ročník 61; s. 1
Hlavní autoři: Guo, Mingde, Chen, Kun-Shan, Yang, Ying, Xu, Zhen
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York IEEE 01.01.2023
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:
Accuracy
AIEM
Backscatter
Backscattering
C band
Correlation
Correlation analysis
Effective correlation length
Integral equations
Model accuracy
Modulation
multiscale rough surface
Radar
radar backscattering
Radar cross sections
Radar measurement
Rough surfaces
Scattering cross sections
Sea surface
Surface roughness
Surface waves
Vectors
Wind
Wind vectors
ISSN:0196-2892, 1558-0644
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Popis
Shrnutí:In this paper, we proposed a modulated correlation function to characterize the multiscale property of the sea surface and adopted it in the AIEM (Advanced Integral Equation Model) to calculate the radar backscattering. Comparisons of NRBCS (Normalized Radar Backscattering Cross Section) with GMFs (Geophysical Model Functions) predictions and radar measurements are conducted in various wind conditions. Good consistency and accuracy confirm the proposed model's accuracy and applicability in predicting radar backscattering. In addition, the relations between two modulation parameters and wind vectors are analyzed at C-band. The effective correlation lengths determined from the modulated correlation function show strong wind dependence, besides the incident angle and frequency in the context of radar backscattering.
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ISSN:0196-2892
1558-0644
DOI:10.1109/TGRS.2023.3306464