以内蒙古河套灌区磴口县为研究区，结合Radarsat-2四极化雷达遥感数据对土壤墒情进行响应分析。研究结果表明，同极化后向散射系数同土壤墒情的响应性高于交叉极化，以同极化均值和交叉极化均值作为参量建立回归模型进而对研究区反演分析，经实测数据检验，该方法能够在一定程度上满足土壤水分监测的需要，优于传统土壤水分分类方法。%The Dengkou county in Inner Mongolia Hetao irrigation district was chosen as the study area, combined with Radarsat-2 four polarization radar remote sensing data analysis of soil moisture. The results showed that the response of backscatter coefficient of the same polarization to the soil moisture was higher than cross polarization. The regression model was established with the mean of same polarization and cross polarization as parametric, with the model inversion analysis in the studied area, it was indicated that the measured data with tested method could meet the requirements of soil moisture, which was superior to the traditional soil moisture classification method.
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