Surface soil roughness estimation from the synergistic use of the active microwave ERS Wind Scatterometer and ERS/SAR data

Mehrez Zribi; S. Le Hegarat-Mascle; Christine Guerin; Beatrice Marticorena; M. Kardous

doi:10.1117/12.512070

5 February 2004 Surface soil roughness estimation from the synergistic use of the active microwave ERS Wind Scatterometer and ERS/SAR data

Mehrez Zribi, S. Le Hegarat-Mascle, Christine Guerin, Beatrice Marticorena, M. Kardous

Author Affiliations +

Proceedings Volume 5238, Image and Signal Processing for Remote Sensing IX; (2004) https://doi.org/10.1117/12.512070
Event: Remote Sensing, 2003, Barcelona, Spain

Abstract

This paper discusses the potential of radar signal to characterize the bare surface roughness in arid or semi-arid regions. Two different scales have been considered with two microwave sensors: high resolution ERS/SAR and low resolution ERS Wind Scatterometer instruments. Ground truth measurements were acquired over different arid sites in the South of Tunisia. An empirical approach is proposed to derive the surface roughness from SAR measurements. In this approach, the surface roughness is characterized by a parameter called Zs. Then, a good correlation between SAR and WSC data is demonstrated. Using these two sensors, we are able to derive the backscattering signal versus incidence angle, in the cases of big sand dunes, rocky relief and others. An empirical model is then proposed to retrieve the sand dune percentage within the different cells of the WSC.

Citation Download Citation

Mehrez Zribi, S. Le Hegarat-Mascle, Christine Guerin, Beatrice Marticorena, and M. Kardous "Surface soil roughness estimation from the synergistic use of the active microwave ERS Wind Scatterometer and ERS/SAR data", Proc. SPIE 5238, Image and Signal Processing for Remote Sensing IX, (5 February 2004); https://doi.org/10.1117/12.512070

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