Analysis of L band radar data over tropical agricultural areas

Mehrez Zribi (1) , Sekhar Muddu (2) , Soumya Bandyopadhyay (3) , Safa Bousbih (1) , Al Bitar Ahmad (1) , Sat-Kumar Tomer (4) , Nicolas S Baghdadi (5)

1 CESBIO - Centre d'études spatiales de la biosphère
2 IISc - Indian Institute of Science
3 INAT - Institut National Agronomique de Tunisie
4 SATYUKT ANALYTICS PVT LTD BANGALORE IND
5 UMR TETIS - Territoires, Environnement, Télédétection et Information Spatiale

The abstract should appear at the top of the left-. The main objective of this study is to analyze the potential use of L-band radar data for the estimation of soil moisture in agricultural tropical areas. Simultaneously to several radar acquisitions made between June and October 2018, using ALOS2-PALSAR sensor over the Berambadi site (south of India), ground measurements of soil roughness, soil water content, LAI were recorded. The sensitivity of the ALOS-2 measurements to variations in soil moisture, which has been reported in several scientific publications, is confirmed in this study, even for dense crops. The radar signals are simulated using different types of backscattering models (physical and semi-empirical) over bare soil and vegetation cover for different types of crops (tumeric, etc). WCM model parameterized with LAI for vegetation contribution allows a good estimation of soil moisture for tumeric.

Mots clés: ALOS-2; radar; L-band; soil; moisture; vegetation; backscattering model

Domaines: Ingénierie de l'environnement

Mehrez Zribi, Sekhar Muddu, Soumya Bandyopadhyay, Safa Bousbih, Al Bitar Ahmad, et al.. Analysis of L band radar data over tropical agricultural areas. International Geoscience and Remote sensing Symposuim, Jul 2019, Yokohama, Japan. pp.6215-6218. ⟨hal-02395394⟩