According to the soil dielectric constant and its microwave emissivity, the soil microwave brightness temperature is deduced, and its mathematical model is given.
根据土壤介电常数及相应的微波发射率，推算出亮度温度值，并给出了数学模式。
Therefore, it was needed to study the relation between emissivity and those factors mentioned above. This thesis focused on revelation of relation between soil characteristics and its emissivity.
然而土壤发射率具有不确定性，受土壤粒径、含水量和含沙量等因素的影响，需要对这些因素与土壤发射率的关系进行系统地研究。
Therefore, it was needed to study the relation between emissivity and those factors mentioned above. This thesis focused on revelation of relation between soil characteristics and its emissivity.
然而土壤发射率具有不确定性，受土壤粒径、含水量和含沙量等因素的影响，需要对这些因素与土壤发射率的关系进行系统地研究。
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