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Interpretation of synthetic aperture radar measurements of ocean currentsSynthetic Aperture Radar (SAR) experiments have been performed over the last few years to measure ocean currents inferred from shifts in the Doppler spectral peak. Interpretations of aircraft SAR measurements, when compared with limited surface values, tend to underestimate the currents by about 25%. A theory is developed that modifies the classical Doppler expression showing that the radar measurements are dependent on the radar processor (system) bandwidth and the received signal bandwidth. Measured bandwidths give a correction that increases the inferred current values by about 25%, bringing the measurements into good agreement. This new correction lends credence to the theory and increases the potential for application of SAR systems to future ocean current measurements. SAR measurements should include the determination of processor and signal bandwidths such that this correction can be applied.
Document ID
19830043091
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Rufenach, C. L.
(NOAA, Wave Propagation Laboratory, Boulder CO, United States)
Shuchman, R. A.
(National Oceanic and Atmospheric Administration Boulder, CO, United States)
Lyzenga, D. R.
(Michigan, Environmental Research Institute, Ann Arbor MI, United States)
Date Acquired
August 11, 2013
Publication Date
February 28, 1983
Publication Information
Publication: Journal of Geophysical Research
Volume: 88
Subject Category
Oceanography
Accession Number
83A24309
Funding Number(s)
CONTRACT_GRANT: NASA ORDER W-15084
CONTRACT_GRANT: NOAA-MO-A01-78-00-43322
Distribution Limits
Public
Copyright
Other

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