Application Study of the Microwave Emissivity Spectra in the Estimation of Salt Content of Saline Soil

摘要

The objective of this paper is to ascertain the mechanism of microwave emissivity spectra for soil salinization, which is of great importance for improving the accuracy of the microwave emissivity. The saline soils were selected and the microwave emissivity spectra data of soils were obtained. According to the analysis the microwave reflectance based on the soil dielectric constant and soil salinity conductivity data or salt content data, the relationships between them were studied. The dielectric constant of the soil moisture was compared with the microwave reflectance in the different band and then the inversion model was established. The results of this study can solve the NP-problem on the microwave inversion model, and provide a theoretical basis to improve low-cost and remote sensing monitoring node’ accuracy of soil salinization.