Title :
Comparison and incident angle dependency for the relation between σ0 and biomass derived from PALSAR
Author :
Yonezawa, Chinatsu ; Kitamura, Aya ; Ogawa, Takashi ; Watanabe, Manabu ; Haruyama, Yukio
Author_Institution :
Grad. Sch. of Agric. Sci., Tohoku Univ., Sendai, Japan
Abstract :
PALSAR data acquired with 34.3° and 23.1° are used to derive regression models between σ0 and above ground biomass. Field data were taken in Tomakomai national forest located in northern Japan. Dynamic range of 4dB are observed for 34.3°, and this is larger than that of 3dB for 23.1°. The correlation coefficient for 23.1° is higher than that for 34.3° in both HH and HV polarization, which may be explained by the larger contribution of double bounce scattering from well aligned planted forest. Regression models derived from other L-band SAR data are also plotted to compare our data. Except for one data, the models are moderately matched with each other.
Keywords :
electromagnetic wave polarisation; electromagnetic wave scattering; regression analysis; synthetic aperture radar; σ0; HH polarization; HV polarization; Japan; L-band SAR data; PALSAR data; Tomakomai national forest; correlation coefficient; double bounce scattering; field data; incident angle dependency; regression model; Biological system modeling; Biomass; Correlation; Data models; L-band; Mathematical model; Vegetation; L-band SAR; biomass; regression model;
Conference_Titel :
Synthetic Aperture Radar (APSAR), 2011 3rd International Asia-Pacific Conference on
Conference_Location :
Seoul
Print_ISBN :
978-1-4577-1351-4
