[1] N Baghdadi, N Boyer, P Todoroff, et al.. Potential of SAR sensors TerraSAR-X, ASAR/ENVISAT and PALSAR/ALOS for monitoring sugarcane crops on Reunion Island [J]. Remote Sens Environ, 2009, 113(8): 1724-1738.

[2] A T Joseph, R van der Velde, P E O′Neill, et al.. Soil moisture retrieval during a corn growth cycle using L-band (1.6 GHz) Radar observations [J]. IEEE T Geosci Remote, 2008, 46(8): 2365-2374.

[3] G Yang, C Zhao, W Huang, et al.. Extension of the Hapke bidirectional reflectance model to retrieve soil water content [J]. Hydrol Earth Syst Sc, 2011, 8(2): 3667-3692.

[4] J C Price. On the information content of soil reflectance spectra [J]. Remote Sens Environ, 1990, 33(2): 113-121.

[5] C L Walthall, J M Norman, J M Welles, et al.. Simple equation to approximate the bidirectional reflectance from vegetative canopies and bare soil surfaces [J]. Appl Opt, 1985, 24(3): 383-387.

[6] B W Hapke. Bidirectional reflectance spectroscopy: 1. Theory [J]. J Geophys Res, 1981, 86(B4): 3039-3054.

[7] S Jacquemoud, F Baret, J F Hanocq. Modeling spectral and bidirectional soil reflectance [J]. Remote Sens Environ, 1992, 41(2-3): 123-132.

[8] A Chappell, T Zobeck, G Brunner. Using bi-directional soil spectral reflectance to model soil surface changes induced by rainfall and wind-tunnel abrasion [J]. Remote Sens Environ, 2006, 102(3-4): 328-343.

[9] Y Wu, P Gong, Q Liu, et al.. Retrieving photometric properties of desert surfaces in China using the Hapke model and MISR data [J]. Remote Sens Environ, 2009, 113(1): 213-223.

[10] D Segelstein. The Complex Refractive Index of Water [D]. Kansas City: University of Missouri-Kansas City, 1981.

[11] Y Lü, Z Sun. The reflectance and negative polarization of light scattered from snow surfaces with different grain size in backward direction [J]. J Quant Spectrosc Ra, 2014, 133: 472-481.

[12] J Peltoniemi, T Hakala, J Suomalainen, et al.. Polarised bidirectional reflectance factor measurements from soil, stones and snow [J]. J Quantum Spectrosc Ra, 2009, 110(17): 1940-1953.

[13] Z Sun, J Zhang, Z Tong, et al.. article size effects on the reflectance and negative polarization of light backscattered from natural surface particulate medium: soil and sand [J]. J Quantum Spectrosc Ra, 2014, 133: 1-12.

[14] P Litvinov, O Hasekamp, B Cairns, et al.. Reflection models for soil and vegetation surfaces from multiple- viewing angle photopolarimetric measurements [J]. J Quantum Spectrosc Ra, 2010, 111(4): 529-539.

[15] F Maignan, F M Breon, E Fedele, et al.. Polarized reflectances of natural surfaces: Spaceborne measurements and analytical modeling [J]. Remote Sens Environ, 2009, 113(12): 2642-2650.

[16] Gao Ming, Song Chong, Gong Lei. Analysis of polarization characteristics about rough surface light scattering based on polarized bidirectional reflectance distribution function [J]. Chinese J Lasers, 2013, 40(12): 1213002.

[17] Li Junlin, Zhang Liming, Chen Hongyao, et al.. Development of BRDF absolute measuring device [J]. Acta Optica Sinica, 2014, 34(5): 0528002.