This work deals with 3D structure characterization and permittivity profile retrieval of snowpacks by tomographic SAR data processing. The acquisition system is a very high resolution ground based SAR system, developed and operated by the SAPHIR team, of IETR, University of Rennes-1 (France). It consists mainly of a vector network analyser and a multi-static antenna system, moving along two orthogonal directions, so as to obtain a two-dimensional synthetic array. Data were acquired during the AlpSAR campaign carried by the European Space Agency and led by ENVEO. In this study, tomographic imaging is performed using Time Domain Back Projection and consists in coherently combining the different recorded backscatter contributions. The assumption of free-space propagation during the focusing process is discussed and illustrated by focusing experimental data. An iterative method for estimating true refractive indices of the snow layers is presented. The antenna pattern is also compensated for. The obtained tomograms after refractive index correction are compared to the stratigraphy of the observed snowpack.
@article{CRPHYS_2017__18_1_57_0, author = {Badreddine Rekioua and Matthieu Davy and Laurent Ferro-Famil and Stefano Tebaldini}, title = {Snowpack permittivity profile retrieval from tomographic {SAR} data}, journal = {Comptes Rendus. Physique}, pages = {57--65}, publisher = {Elsevier}, volume = {18}, number = {1}, year = {2017}, doi = {10.1016/j.crhy.2015.12.016}, language = {en}, }
TY - JOUR AU - Badreddine Rekioua AU - Matthieu Davy AU - Laurent Ferro-Famil AU - Stefano Tebaldini TI - Snowpack permittivity profile retrieval from tomographic SAR data JO - Comptes Rendus. Physique PY - 2017 SP - 57 EP - 65 VL - 18 IS - 1 PB - Elsevier DO - 10.1016/j.crhy.2015.12.016 LA - en ID - CRPHYS_2017__18_1_57_0 ER -
%0 Journal Article %A Badreddine Rekioua %A Matthieu Davy %A Laurent Ferro-Famil %A Stefano Tebaldini %T Snowpack permittivity profile retrieval from tomographic SAR data %J Comptes Rendus. Physique %D 2017 %P 57-65 %V 18 %N 1 %I Elsevier %R 10.1016/j.crhy.2015.12.016 %G en %F CRPHYS_2017__18_1_57_0
Badreddine Rekioua; Matthieu Davy; Laurent Ferro-Famil; Stefano Tebaldini. Snowpack permittivity profile retrieval from tomographic SAR data. Comptes Rendus. Physique, Volume 18 (2017) no. 1, pp. 57-65. doi : 10.1016/j.crhy.2015.12.016. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2015.12.016/
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