Fig. 1. Geometrical figure of BRDF

Fig. 2. Measurement schematic diagram

Fig. 3. Spectral reflectance of ground-feature’s background at different viewing zenith angles. (a) Grass; (b) soil

Fig. 4. Hemispherical distributions of reflectance factor for ground-feature’s background at 865 nm.(a) Grass; (b) soil

Fig. 5. Polarized reflectance spectra of ground-feature’s background. (a) Grass; (b) soil

Fig. 6. Hemispherical distributions of polarized reflectance factor for ground-feature’s background at 865 nm. (a) Grass; (b) soil

Fig. 7. Hemispherical distributions of polarized reflectance factor modeled by six-component pBRDF for ground-feature’s background. (a) Grass; (b) soil

Fig. 8. Comparison of simulated and measured values at different relative azimuth angles. (a) Grass; (b) soil