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- W257993387 abstract "The potential of passive microwave radiometry for the soil moisture measurement is a well established one, especially in the long wave length regions due to its high penetrating capacity through vegetation. Radiometric data can be used as a mapping tool for classifying the crops, examining their health and viability and monitoring the farming practices. The radiometric data or the emission of microwave energy commonly referred as microwave brightness temperature TB is proportional to the product of surface temperature and surface emissivity. The surface emissivity of soils is dependent on both water content and its physical characteristics . Hence these data are essential for the retrieval of soil moisture content from the remotely sensed satellite data. In this paper, we present the emissivity data of different Indian soils of different textures at various moisture levels in the frequency range 0.6GHz to 1.2GHz, calculated from the measured values of dielectric constants in the laboratory. The result indicate that the emissivity values are independent of frequency and texture but shows a strong dependence on the moisture content. On the basis of these results, an empirical relation is formulated for calculating the soil moisture content form emissivity values, which shows a good agreement with other reported radiometric measurements." @default.
- W257993387 created "2016-06-24" @default.
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- W257993387 date "2001-01-01" @default.
- W257993387 modified "2023-09-24" @default.
- W257993387 title "AN EMPIRICAL RELATION FOR THE SOIL MOISTURE MEASUREMENT USING EMISSIVITY VALUES AT MICROWAVE FREQUENCY RANGE" @default.
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