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首页> 外文期刊>Geoscience and Remote Sensing Letters, IEEE >Soil Moisture Estimation Using High-Resolution Spotlight TerraSAR-X Data
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Soil Moisture Estimation Using High-Resolution Spotlight TerraSAR-X Data

机译:利用高分辨率聚光灯TerraSAR-X数据估算土壤湿度

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摘要

High-resolution and dual polarized Spotlight TerraSAR-X images are assessed for soil moisture parameter retrieval. This letter presents bare soil moisture estimation and estimation of moisture of vegetated areas. The bare soil moisture estimation is based on the Shi model. The Minimum Mean Square Error approach is used to determine the unknown parameters of the Shi model using ground measurements of volumetric moisture and SAR data. The soil moisture of vegetated areas is estimated using the vegetation and soil backscattering coefficients. The unknown parameters of vegetation and soil backscattering models were estimated using Tikhonov optimization. The experimental results showed that the used models provide good results for estimating bare soil moisture and moisture of vegetated areas.
机译:评估了高分辨率和双偏振Spotlight TerraSAR-X图像,以检索土壤湿度参数。这封信介绍了裸露的土壤湿度估算值和植被区的湿度估算值。裸土水分估算基于Shi模型。最小均方误差方法用于使用地面湿度和SAR数据的地面测量来确定Shi模型的未知参数。利用植被和土壤反向散射系数估算植被区的土壤水分。使用Tikhonov优化估算了植被和土壤反向散射模型的未知参数。实验结果表明,所使用的模型为估算裸露的土壤水分和植被区的水分提供了良好的结果。

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