[7] Barrett B W, Dwyer E, Whelan P. Soil moisture retrieval from active space borne microwave observations: An evaluation of current techniques[J]. Remote Sensing, 2009,1(3): 210-242.
[11] Kumar K, Suryanarayana Rao H P, Arora M K. Study of water cloud model vegetation descriptors in estimating soil moisture in Solani catchment[J]. Hydrological Processes, 2015, 29(9):2137-2148.
[16] Hajj M E, Baghdadi N, Zribi M, et al. Soil moisture retrieval over irrigated grassland using X-band SAR data[J]. Remote Sensing of Environment, 2016, 176:202-218.
[17] Bériaux E, Waldner F, Collienne F, et al. Maize Leaf Area Index Retrieval from Synthetic Quad Pol SAR Time Series Using the Water Cloud Model[J]. Remote Sensing, 2015, 7(12):16204-16225.
[18] Imen G, Magagi R, Berg A A, et al. Soil moisture retrieval over agricultural fields from multi-polarized and multi-angular Radarsat-2 SAR data[J]. Remote Sensing of Environment, 2011, 115(1): 33-43.
[19] Kim Y, Jackson T, Bindlish R, et al. Retrieval of wheat growth parameters with radar vegetation indices[J]. IEEE Geoscience and Remote Sensing Letters, 2014, 11(4): 808-812.
[21] JIN Xiu-Liang, YANG Gui-Jun, XU Xin-Gang, et al. Combined multi-temporal optical and radar parameters for estimating LAI and biomass in winter wheat using HJ and Radarsar-2 data[J]. Remote Sensing, 2015, 7(10): 13251-13272.
[28] Bindlish R, Barros A P. Parameterization of vegetation backscatter in radar-based, soil moisture estimation[J]. Remote Sensing of Environment, 2001, 76(1):130-137.
[30] Sandholt I, Rasmussen K, Andersen J. A simple interpretation of the surface temperature/vegetation index space for assessment of surface moisture status[J]. Remote Sensing of Environment, 2002,79(2):213-224.