Laboratory study of polarized microwave scattering by surface waves at grazing incidence: the influence of long waves

@article{Rozenberg1996LaboratorySO,
  title={Laboratory study of polarized microwave scattering by surface waves at grazing incidence: the influence of long waves},
  author={Anatol D. Rozenberg and Derek C. Quigley and W. Kendall Melville},
  journal={IEEE Trans. Geosci. Remote. Sens.},
  year={1996},
  volume={34},
  pages={1331-1342}
}
Laboratory measurements of microwave scattering at grazing incidence from superposed wind and weakly nonlinear (AK<0.024) regular long waves are presented. This study is an extension of previous measurements with wind waves only. A dual polarized (VV, HH) coherent pulsed Ku-band (14 GHz) scatterometer with temporal resolution of 3 ns was used to obtain Doppler spectra and the absolute cross section of scattered signals for grazing angles from 6/spl deg/ to 25/spl deg/ and winds in the range 2… 

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References

SHOWING 1-10 OF 21 REFERENCES

Laboratory study of polarized scattering by surface waves at grazing incidence. I. Wind waves

The classification of the electromagnetic scattering was consistent with comparisons of direct and Doppler measurements of the kinematics of the surface wave field and was also consistent with asymmetries in the wave field which increased with increasing wind speed.

X band microwave backscattering from ocean waves

Backscattering experiments at microwave frequencies were conducted off the west coast of Scotland in the summer of 1991. Using a dual-polarization, eight-frequency, X band, coherent scatterometer

Physical processes of microwave backscattering from laboratory wind-wave surfaces

  • N. EbuchiH. KawamuraY. Toba
  • Physics, Mathematics
    Proceedings of IGARSS '93 - IEEE International Geoscience and Remote Sensing Symposium
  • 1993
Microwave backscattering from wind-wave surfaces in a wind-wave tank is investigated by using an X-band (9.6 GHz) scatterometer. The radar beam is focused on the water surface by using an ellipsoidal

Microwave scattering and the straining of wind‐generated waves

The modulation in backscattered power from wind-generated waves due to the presence of a 0.575-Hz plunger-generated wave has been measured in a wave tank as a function of air friction velocity and

Simultaneous measurements of the ocean wave-radar modulation transfer function at L, C, and X band

Radar backscatter measurements were performed from the German Forschungsplattform Nordsee (FPN) in the North Sea in order to determine the ocean wave-radar modulation transfer function (MTF), which

Ocean wave‐radar modulation transfer functions from the West Coast Experiment

Short gravity-capillary waves, the equilibrium, or the steady state excitations of the ocean surface are modulated by longer ocean waves. These short waves are the predominant microwave scatterers on

Cross sections and modulation transfer functions at L and K u bands measured during the Tower Ocean Wave and Radar Dependence Experiment

Normalized radar cross sections and modulation transfer functions (MTFs) for microwave backscattering from the sea surface have been measured at both L- and Ku- Bands during the Tower Ocean Wave and

Hydrodynamic modulation of short wind‐wave spectra by long waves and its measurement using microwave backscatter

In this paper we use results of microwave backscattering experiments over the past decade to attempt to present a coherent picture of the ocean wave-radar modulation transfer function (MTF) based on

Laboratory studies of radar sea spikes at low grazing angles

We report on measurements of low grazing angle radar sea spikes in a laboratory wave tank. Using an X band radar with 10-cm range resolution and multiple-range bin capability, the sea spikes were