Deering, D. W.Eck, ThomasOtterman, J.2024-04-292024-04-291989-07Deering, D.W., T.F. Eck, and J. Otterman. “Bidirectional Reflectances of Three Soil Surfaces and Their Characterization through Model Inversion.” 12th Canadian Symposium on Remote Sensing Geoscience and Remote Sensing Symposium, 2 (July 1989): 670–73. https://doi.org/10.1109/IGARSS.1989.578904.http://hdl.handle.net/11603/3333912th Canadian Symposium on Remote Sensing Geoscience and Remote Sensing Symposium, 10-14 July 1989, Vancouver, BC, CanadaSpectral bidirectional reflectances were measured over three natural soil sites using a specially designed radiometer called the PARABOLA. TWo of the sites were bare soils and the third had a sparse cover of desert scrub. The reflectances were strongly non­ Lambertian for all three surfaces but with markedly different patterns. The measured data were fitted with a quasi-physical reflectance model in which the surface back­ scattering and forwardscattering are separately formulated. A soil reflectance characterization was obtained by assessing the contributions of the forward, -backward and Lambertian components. This three-parameter characterization produced a satisfactory fit to the measured reflectances, and appears promising to provide a basis for soils categorization.4 pagesen-USThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.Public Domainhttps://creativecommons.org/publicdomain/mark/1.0/InstrumentsBidirectional controlReflectivityVegetationSoil measurementsEarthRadiometryRough surfacesSurface fittingSurface topographyText