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Effects of soil and canopy characteristics on microwave backscattering of vegetationA frequency modulated continuous wave C-band (4.8 GHz) scatterometer was mounted on an aerial lift truck and backscatter coefficients of corn were acquired as functions of polarizations, view angles, and row directions. As phytomass and green leaf area index increased, the backscatter also increased. Near anthesis when the canopies were fully developed, the major scattering elements were located in the upper 1 m of the 2.8 m tall canopy and little backscatter was measured below that level. C-band backscatter data could provide information to monitor vegetation at large view zenith angles.
Document ID
19910010184
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Daughtry, C. S. T. (Agricultural Research Service Beltsville, MD., United States)
Ranson, K. J. (NASA Goddard Space Flight Center Greenbelt, MD., United States)
Date Acquired
September 6, 2013
Publication Date
February 1, 1991
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
NASA-CR-188022
NAS 1.26:188022
Accession Number
91N19497
Funding Number(s)
CONTRACT_GRANT: NAGW-799
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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