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This study analyzed the impact of speckle filtering techniques on the assessment of soil moisture and roughness parameters from SAR images. Speckle filtering is important for SAR data analysis but can impact derived soil parameters. The study applied 5 filtering techniques (box, median, Gamma-MAP, ACMAP, wavelet) to RADARSAT images and compared estimated soil moisture and roughness to reference values. Results showed significant impact of filtering, especially on roughness estimates. Filtering smoothed hete

Author

Nguyen Ba Duy

Language

EN