NDLI: A modeling study of backscattering from soil surfaces

Content Provider	IEEE Xplore Digital Library
Author	Zhi-Jian Li Fung, A.K. Tjuatja, S. Gibbs, D.P. Betty, C.L. Irons, J.R.
Copyright Year	1980
Abstract	An examination of soil particles from very fine to medium sand surfaces has indicated that they are generally on the order of 50 to 500 /spl mu/m. Thus, at an incident wavelength around 0.6 /spl mu/m, the incident light should "see" microscopic roughness features on the particle rather than its microscopic features. It is anticipated that the macroscopic features of a soil particle are responsible for the shadowing and tilting. Note that these smaller scales of roughness may-still be larger than the incident wavelength. In view of this physical structure, a soil particle is modeled as a layer with two arbitrarily oriented surface boundaries to simulate the overall roughness effect. A scattering phase function is then developed for this layer by considering wave scattering from and propagating through it. A probability distribution function for the orientation of the layer boundaries is assumed for the calculation of this phase function. After the phase function is developed, it is incorporated into a matrix doubling algorithm calculate the backscattering coefficients for a half space of soil particles. Preliminary results indicate that backscattering is dominated by the small scales of roughness riding on the particle, and those large scales of roughness are responsible for tilting and shadowing.
Sponsorship	IEEE Geoscience and Remote Sensing Society IEEE URSI
Starting Page	264
Ending Page	271
Page Count	8
File Size	1294477
File Format	PDF
ISSN	01962892
Volume Number	34
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Backscatter Soil Rough surfaces Surface roughness Microscopy Shadow mapping Light scattering Particle scattering Probability distribution Large-scale systems
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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