Estimation of kidney bean crop variables using ground-based scatterometer data at 9.89 GHz

摘要: Crop variables were estimated using ground-based multi-temporal, multi-angle and co-polarized scatterometer X-band data at 9.89 GHz. An outdoor crop-bed was prepared to observe the response VV HH polarizations in incidence angle range from 20° 70°. Soil moisture (SM) crop variables, including leaf area index (LAI), water (LWAI) plant height (PH), of a kidney bean different stages growth measured. The aim this study estimate determine how interact with microwaves. We found that LAI correlated better than LWAI microwave backscattering coefficient σ0 (at GHz) correlation PH lower, most suitable 40°. value increased an increase both polarizations. retrieved by inversion cloud model polarization-based compared another based on least squares optimization. results are promising for estimation particularly LAI.