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C-band backscattering from corn canopiesA frequency-modulatad continuous-wave C-band (4.8 GHz) scatterometer was mounted on an aerial lift truck, and backscatter coefficients of corn (Zea mays L.) 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 for view angles of 30 deg or greater. C-band backscatter data could provide information to monitor tillage operations at small view zenith angles and vegetation at large view zenith angles.
Document ID
19910053646
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Daughtry, C. S. T.
(USDA, Agricultural Research Service, Beltsville MD, United States)
Ranson, K. J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Biehl, L. L.
(Purdue University West Lafayette, IN, United States)
Date Acquired
August 15, 2013
Publication Date
May 1, 1991
Publication Information
Publication: International Journal of Remote Sensing
Volume: 12
ISSN: 0143-1161
Subject Category
Earth Resources And Remote Sensing
Accession Number
91A38269
Funding Number(s)
CONTRACT_GRANT: NAGW-799
Distribution Limits
Public
Copyright
Other

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