Model simulation taken into consideration, a method is proposed to estimate soil moisture content using GNSS-R technology based on lookup table. Data acquired by GNSS-R delay mapping receiver is applied to validate the new method. The retrieval results on Dec. 22, 2013 are closer to the 3.5 cm in situ values. As for the experimental data in Sept. 2013, two major reasons for the severe attenuation of reflected signal power are analyzed, including the tilted high-gain antenna and the vegetated land surface. I...