Abstract Radar data at C-band has shown great potential for the monitoring of soil and canopy hydric conditions of wheat crops. In this study, the C-band Sentinel-1 time series including the backscattering coefficients σ0 at VV and VH polarization, the polarization ratio (PR) and the interferometric coherence ρ are first analyzed with the support of experimental data gathered on three plots of irrigated winter wheat located in the Haouz plain in the center of Morocco covering five growing seasons. The results showed that ρ and PR are tightly related to the canopy development. ρ is also sensitive to soil preparation. By contrast, σ0 was found to be widely linked to changes in surface soil moisture (SSM) during the first growth stages when Leaf Area Index remains moderate (

中文翻译：

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在半干旱地区使用 Sentinel-1 的后向散射系数和干涉相干监测小麦作物

摘要 C波段雷达数据在小麦作物土壤和冠层含水量监测方面显示出巨大潜力。在这项研究中，首先分析了 C 波段 Sentinel-1 时间序列，包括 VV 和 VH 极化的背向散射系数 σ0、极化比 (PR) 和干涉相干 ρ位于摩洛哥中部豪兹平原的冬小麦，涵盖五个生长季节。结果表明，ρ和PR与冠层发育密切相关。ρ 对整地也很敏感。相比之下，当叶面积指数保持中等时，发现 σ0 与第一个生长阶段的表层土壤水分 (SSM) 的变化密切相关。