Abstract
The results of shipboard measurements of the modulation characteristics of 3.2 cm radar signals scattered by a rough sea surface at low grazing angles are reported. The experiments were carried out from on-board a drifting research vessel in the Atlantic trade wind zone at wind speeds of 7–10 m s−1 and coinciding directions of the wind and waves. Azimuthal isotropy of the modulation spectra was observed. It is emphasized that the ‘sea surface-scattered signal’ modified modulation transfer function is somewhat larger for horizontal polarization than for vertical polarization.
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References
Keller, W. C. and Wright, J. W. Microwave scattering and the straining of wind generated waves.Radio Sci. (1975)10, 139–147.
Wright, J. W., Plant, W. J., Keller, W. C. and Jones, W. L. Ocean wave-radar modulation transfer function from West Coast experiments.J. Geophys. Res. (1980)85, 4957–4966.
Plant, W. J., Keller, W. C. and Cross, A. Parametric dependence of ocean wave-radar modulation transfer function.J. Geophys. Res. (1983)88, 9747–9756.
Keller, W. C., Plant, W. J. and Weissman, D. E. The dependence ofX-band microwave sea return on atmospheric stability and sea state.J. Geophys. Res. (1985)90, 1019–1029.
Weissman, D. E. and Johnson, J. W. Measurements of ocean wave spectra and modulation transfer function with airborne two-frequency scatterometer.J. Geophys. Res. (1986)91, 2450–2460.
Ziemer, F. and Rosenthal, W. On the transfer function of a shipborne radar for imaging ocean waves.Proc. IGARSS '87 Symp., Ann Arbor (1987), pp. 1559–1564.
Rozenberg, A. D. Shore measurements of the ‘sea surface-radar signal’ modulation transfer function with 3-cm wave length.Izv. Vuzov, Radiofiz. (in press).
Lavrova, O. Yu. and Rozenberg, A. D. Measurements of the radar fluctuation characteristics scattered by the sea surface.Izv. Acad. Nauk SSSR, Fiz. Atmos. Okeana (1989),25, 1099–1107.
Rozenberg, A. D. About the magnitude of the energetic part of roughness retrieved from vertical shifting of the vessel.Morsk. Gigrofiz. Zh. (1988) No. 3, 41–76.
Donelan, M. A. and Pierson, W. J. Radar scattering and equilibrium ranges in wind generated waves with application to scatterometry.J. Geophys. Res. (1987)92, 4971–5029.
Ivanov, Yu. A., Lavrova, O. Yu. and Rozenberg, A. D. Measurements of ocean wave spectra from a ship.Izv. Nauk SSSR. Fiz. Atmos. Okeana (1988)24, 853–860.
Bondur, V. G. and Sharkov, E. A. Statistical characteristics of the linear geometry elements of foam structures on the sea surface based on optical observation data.Issled. Zemli iz Kosmosa (1986) No. 4, 21–31.
Snyder, R. L., Smith, L. and Kennedy, R. M. On the formation of whitecaps by threshold mechanism. R3: Field experiment and comparison with theory.J. Phys. Oceanogr. (1983)13, 1505–1518.
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Translated by V. Puchkin.
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Malinovsky, V.V., Rosenberg, A.D. Shipboard measurements of the modulation characteristics of 3.2 cm radar signals scattered by the sea surface. Soviet Journal of Physical Oceanography 2, 309–319 (1991). https://doi.org/10.1007/BF02346083
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DOI: https://doi.org/10.1007/BF02346083