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首页> 外文期刊>Electronics and Communications in Japan / 電子情報通信. Part 1, Communications >Measurement of Scattering Coefficients of Soil by Ka-Band Polarimetric Scatterometer - Dependence on Soil Moisture Content and Surface Roughness
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Measurement of Scattering Coefficients of Soil by Ka-Band Polarimetric Scatterometer - Dependence on Soil Moisture Content and Surface Roughness

机译：Ka波段极化散射仪测量土壤的散射系数-取决于土壤水分和表面粗糙度

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摘要

To clarify the scattering characteristics of the ground surface for Ka band electromagnetic waves, which is necessary for evaluation of the effect of the Ka band rain radar on board the Global Precipitation Measurement Mission core satellite, the dependence of the normalized radar cross section (backscattering coefficient) σ{sup}0 of the soil on the surface roughness and the water content in the soil was measured with a Ka band polarimetric scatterometer. The results show that the dependence of the backscatter coefficient σ{sup}0 on the surface roughness, the moisture sensitivity, and the angle of incidence is obtained for the Ka band waves. For an angle of incidence of 10°, σ{sup}0 does not depend much on the surface roughness and increases in proportion to the water content. σ{sup}0 is calculated by the theoretical equation and the empirical equation, and is found accurate by comparison with the experiment.
机译：为了阐明Ka波段电磁波在地面上的散射特性，这对于评估Ka波段雨水雷达对全球降水测量任务核心卫星的作用是必要的，归一化雷达截面的依赖性（反向散射系数） ）用Ka带偏振散射仪测量土壤的表面粗糙度σ{sup} 0和土壤中的水含量。结果表明，对于Ka带波，获得了反向散射系数σ{sup} 0与表面粗糙度，湿度敏感性和入射角的关系。对于10°的入射角，σ{sup} 0在很大程度上不取决于表面粗糙度，而是与水含量成比例地增加。 σ{sup} 0由理论方程和经验方程计算得出，与实验结果比较准确。

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