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Aircraft active microwave measurements for estimating soil moistureBoth active and passive microwave sensors are sensitive to variations in near-surface soil moisture. The principal advantage of active microwave systems for soil moisture applications is that high spatial resolution can be retained even at satellite attitudes. The considered investigation is concerned with the use of active microwave scatterometers for estimating near-surface soil moisture. Microwave scatterometer data were obtained during a series of three aircraft flights over a group of Oklahoma research watersheds during May 1978. Data were obtained for the C, L, and P bands at angles of incidence between 5 and 50 degrees. The best results were obtained using C band data at incidence angles of 10 and 15 degrees and soil moisture depth of 0 to 15 cm. These results were in excellent agreement with the conclusions of the truck-mounted scatterometer measurement program reported by Ulaby et al. (1978, 1979).
Document ID
19810059143
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Jackson, T. J.
(U.S. Science and Education Administration, Hydrology Laboratory, Beltsville MD, United States)
Chang, A.
(Science and Education Administration Beltsville, MD, United States)
Schmugge, T. J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 11, 2013
Publication Date
June 1, 1981
Publication Information
Publication: Photogrammetric Engineering and Remote Sensing
Volume: 47
Subject Category
Earth Resources And Remote Sensing
Accession Number
81A43547
Distribution Limits
Public
Copyright
Other

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