A single-frequency dielectric model at 435 MHz for mineral soils is proposed. The dielectric model was created on the basis of the laboratory dielectric measurements of three soil samples with clay content in the range of 9.1%–41.3%. The input parameters of the dielectric model are volumetric soil moisture and clay content. The output parameter of the dielectric model is complex permittivity (CP). The model prediction errors are comparable with the errors of instrumental measurements of the CP for refractive index and normalized attenuation 0.1–0.3 and 0.06–0.12, respectively, in terms of root-mean-square error (RMSE). The comparative analysis of dielectric predictions in the case of the developed model proved to obtain a better accuracy than the existing dielectric models. The created model may be recommended for practical use in the algorithms of soil-moisture retrieval in the P-band.

中文翻译：

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435 MHz 频率下解冻矿物土壤的介电模型

提出了一种用于矿质土壤的 435 MHz 单频介电模型。介电模型是基于对粘土含量在 9.1%–41.3% 范围内的三个土壤样品的实验室介电测量创建的。介电模型的输入参数是体积土壤水分和粘土含量。介电模型的输出参数是复介电常数 (CP)。就均方根误差 (RMSE) 而言，模型预测误差与折射率和归一化衰减 0.1-0.3 和 0.06-0.12 的 CP 仪器测量误差相当。在开发模型的情况下，介电预测的比较分析证明获得比现有介电模型更好的精度。