Simulation de la rétrodiffusion radar d'un manteau neigeux. Comparaison avec les données du projet NoSREx

Michel Gay (1, 2) , Xuan-Vu Phan (2) , Laurent Ferro-Famil (3) , Fatima Karbou (4)

1 GIPSA-Services - GIPSA-Services
2 GIPSA-SIGMAPHY - GIPSA - Signal Images Physique
3 IETR - Institut d'Électronique et des Technologies du numéRique
4 CNRM - Centre national de recherches météorologiques

This paper presents a multilayer snowpack electromagnetic backscattering model, based on Dense Media Radiative Transfer (DMRT). This model is capable of simulating the interaction of electromagnetic wave (EMW) at X-band and Ku-band frequen- cies with multilayer snowpack. The air-snow interface and snow-ground backscattering components are calculated using the Integral Equation Model (IEM) by [1], whereas the volume backscattering component is calculated based on the solution of Vector Radiative Transfer (VRT) equation at order 1. Case study has been carried out using measurement data from NoSREx project [2], which include SnowScat data in X-band and Ku-band, TerraSAR-X acquisitions and snowpack stratigraphic in-situ measurements. The results of model simulations show good agreement with the radar observations, and therefore allow the DMRT model to be used in various applications, such as data assimilation [3].

Domaines: Traitement du signal et de l'image [eess.SP]; Analyse de données, Statistiques et Probabilités [physics.data-an]; Géophysique [physics.geo-ph]

Michel Gay, Xuan-Vu Phan, Laurent Ferro-Famil, Fatima Karbou. Simulation de la rétrodiffusion radar d'un manteau neigeux. Comparaison avec les données du projet NoSREx. Journées SHF, Glaciologie - Nivologie - Hydrologie de Montagne, Mar 2015, Grenoble, France. ⟨hal-01253604⟩