Estimation of a forest backscatter profile at P-band using Single Baseline (Pol-)InSAR - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue IEEE Transactions on Geoscience and Remote Sensing Année : 2010

Estimation of a forest backscatter profile at P-band using Single Baseline (Pol-)InSAR

Franck Garestier
Thuy Le Toan
  • Fonction : Auteur
  • PersonId : 848836

Résumé

The vertical backscatter profile of a pine forest constituted by stands of different height is inverted from a single baseline P-band Pol-InSAR data in order to identify scatterers in the canopy. The proposed approach uses the Gaussian vertical backscatter profile model, which associates an interferometric coherence expression to a vertical scatterers' distribution characterized by relative standard deviation and elevation. The methodology, which uses in situ measurements of forest height and unbiased ground level estimation, is applied to HV and VV channels, providing accuracy given sufficiently low ground-to-canopy power ratios. Inverted backscatter profiles show maximum power converging toward the basis of the tree crown on highest forests, where the largest branches are located, indicating the high sensitivity of P-band measurements to the forest structure and to the vertical biomass distribution. Over lower stands with larger tree densities, the power peak is located in the upper part of the canopy, which can be explained by a stronger attenuation in the canopy.

Mots clés

Fichier non déposé

Dates et versions

hal-00566582 , version 1 (16-02-2011)

Identifiants

Citer

Franck Garestier, Thuy Le Toan. Estimation of a forest backscatter profile at P-band using Single Baseline (Pol-)InSAR. IEEE Transactions on Geoscience and Remote Sensing, 2010, 48 (9), pp.3340 - 3348. ⟨10.1109/TGRS.2010.2046669⟩. ⟨hal-00566582⟩
230 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More