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Measurements of ocean wave spectra and modulation transfer function with the airborne two frequency scatterometerThe directional spectrum and the microwave modulation transfer function of ocean waves can be measured with the airborne two frequency scatterometer technique. Similar to tower based observations, the aircraft measurements of the Modulation Transfer Function (MTF) show that it is strongly affected by both wind speed and sea state. Also detected are small differences in the magnitudes of the MTF between downwind and upwind radar look directions, and variations with ocean wavenumber. The MTF inferred from the two frequency radar is larger than that measured using single frequency, wave orbital velocity techniques such as tower based radars or ROWS measurements from low altitude aircraft. Possible reasons for this are discussed. The ability to measure the ocean directional spectrum with the two frequency scatterometer, with supporting MTF data, is demonstrated.
Document ID
19840019214
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Weissman, D. E.
(Hofstra Univ. Hampton, VA, United States)
Johnson, J. W.
(NASA Langley Research Center)
Date Acquired
August 12, 2013
Publication Date
May 1, 1984
Publication Information
Publication: NASA. Marshall Space Flight Center Frontiers of Remote Sensing of the Oceans and Troposphere from Air and Space Platforms
Subject Category
Oceanography
Accession Number
84N27282
Funding Number(s)
CONTRACT_GRANT: NAGW-468
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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