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Discrete random media techniques for microwave modeling of vegetated terrainMicrowave remote sensing models of vegetated terrain are investigated. The problem is to determine canopy characteristics such as biomass, canopy height, and the moisture of the underlying soil. The report describes a discrete scatter model which has been employed to model backscatter in the active (radar) case and to model brightness temperature in the passive (radiometric) case. The acquisition of ground truth data is discussed, as well as the comparison of theory and experiment. The overall conclusion of the work has been that the discrete scatter model in conjunction with efficient scatter algorithms and the distorted Born approximation is a most appropriate methodology to use for modeling purposes in the microwave region.
Document ID
19920004260
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Lang, Roger H. (George Washington Univ. Washington, DC, United States)
Date Acquired
September 6, 2013
Publication Date
September 1, 1991
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
NAS 1.26:188472
NASA-CR-188472
Accession Number
92N13478
Funding Number(s)
CONTRACT_GRANT: NAG5-265
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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