Title :
Compact polarimetry mode at low frequency for vegetation applications
Author :
Truong-Loï, M. -L ; Dubois-Fernandez, P. ; Freeman, A. ; Pottier, E.
Author_Institution :
Electromagn. & Radar Dept., ONERA The French Aerosp. Lab., Salon-de-Provence, France
Abstract :
Global warning is now known to be the major environmental issue mankind will have to face in the next decade. Monitoring of vegetation and biomass is clearly an essential piece of information required at all levels ranging from the scientific studies to understand and forecast, to the political actors and government leaders responsible for drafting remediation policies and evaluating their impact. Microwave remote sensing with the low-frequency SAR technique can provide a useful characterization of forest (spatial coverage, species, density, height...) at a global scale, relying on the all-weather imaging capabilities of SAR linked with the significant penetration of the low-frequency EM wave in the canopy. The published techniques for forest characterization from low frequency SAR data include radiometry inversion, polarimetric inversion based on the anisotropy parameters and PolInSAR Random Volume Over Ground inversion . In this paper, we will more specifically concentrate on the PolSAR technique and the impact of ionospheric effect.
Keywords :
climatology; environmental engineering; polarimetry; remote sensing by radar; synthetic aperture radar; vegetation mapping; PolInSAR Random Volume Over Ground inversion; PolSAR technique; all-weather imaging; anisotropy parameters; biomass monitoring; compact polarimetry mode; environmental issue; global warning; low-frequency EM wave; low-frequency SAR technique; microwave remote sensing; polarimetric inversion; radiometry inversion; vegetation monitoring; Biomass; Frequency; Government; Microwave imaging; Microwave radiometry; Microwave theory and techniques; Polarimetry; Remote monitoring; Technical drawing; Vegetation mapping; SAR; biomass; calibration; compact polarimetry mode; ionosphere;
Conference_Titel :
Radar Conference - Surveillance for a Safer World, 2009. RADAR. International
Conference_Location :
Bordeaux
Print_ISBN :
978-2-912328-55-7