中文摘要：

为探讨在更多波段上开展基于光偏振特性土壤湿度检测的可行性,采用自行搭建的光学系统,在可见/近红外波段上开展土壤湿度与反射光偏振特性的实验研究。研究结果表明：在600~800 nm波段,土壤湿度与反射光偏振度具有相关性,其中当14%≤土壤湿度≤30%时,反射光偏振度与土壤湿度具有良好的线性关系。对实测数据进行回归分析,结果显示线性模型平均标准差小于3%,优于参考文献[5]中近红外光谱特征方法 10%的误差结果,说明在该波段范围,采用测量光偏振态进行土壤湿度检测的方法具有可行性,为大范围土壤含水量的偏振遥感探测提供科学依据。

英文摘要：

The self-constructed optical system was employed to study soil moisture and reflected light polarization characteristics in visible and near-infrared, to discuss the feasibility of the soil moisture detection based on light polarization property in more wave bands. The study results show： in the band of 600-800 nm, soil moisture and the degree of reflected light polarization have correlation, especially when the soil moisture is more than or equal to 14% and less than or equal to 30%, the degree of reflected light polarization and soil moisture have proper linear relation. According to analysis of regression to measured data, linear model average standard deviation is less than 3%, having an advantage over the method of near infrared spectrum characteristic of 10% obtained in Ref. [5], accounting for the feasibility of the soil moisture detection on the basis of measuring light polarization in this band （600-800 nm）, providing scientific basis for polarization remote sensing detection in wide-range soil water content.