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On the Doppler Frequency Shifts of Radar Signals Backscattered from the Sea Surface

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Radiophysics and Quantum Electronics Aims and scope

We study the frequency spectra of the radar signals scattered from the wind waves on the sea surface in the full-scale experiment. Two types of the radar Doppler shifts of the spectrum maximum, namely, the averaged shift of the instantaneous spectrum of the scattered signal and the shift of the maximum of the signal time-averaged spectrum as functions of the incidence angle and the wind velocity and direction are analyzed for different sounding-wave polarizations. Significant difference between the average shift of the instantaneous spectrum and the shift of the average-spectrum maximum is demonstrated. This difference is attributed to the radar-signal modulation effect in the field of long surface waves. The obtained results are very important for correct retrieval of the velocities of the surface currents using the data of the satellite-borne measurements of the radar Doppler shifts.

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Authors and Affiliations

  1. Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod, Russia

    S. A. Ermakov, I. A. Kapustin, I. A. Sergievskaya & O. V. Shomina

  2. Russian State Hydrometeorological University, St. Petersburg, Russia

    S. A. Ermakov, I. A. Kapustin, V. N. Kudryavtsev, I. A. Sergievskaya, O. V. Shomina & B. Chapron

  3. N. I. Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia

    S. A. Ermakov, I. A. Kapustin, I. A. Sergievskaya & O. V. Shomina

  4. Volga State Academy of Water Transport, Nizhny Novgorod, Russia

    S. A. Ermakov

  5. Marine Hydrophysical Institute, Sevastopol, Russia

    Yu. Yu. Yurovskiy

Authors
  1. S. A. Ermakov
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  2. I. A. Kapustin
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  3. V. N. Kudryavtsev
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  4. I. A. Sergievskaya
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  5. O. V. Shomina
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  6. B. Chapron
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  7. Yu. Yu. Yurovskiy
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Corresponding author

Correspondence to S. A. Ermakov.

Additional information

Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 57, No. 4, pp. 267–280, April 2014.

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Ermakov, S.A., Kapustin, I.A., Kudryavtsev, V.N. et al. On the Doppler Frequency Shifts of Radar Signals Backscattered from the Sea Surface. Radiophys Quantum El 57, 239–250 (2014). https://doi.org/10.1007/s11141-014-9507-8

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  • DOI: https://doi.org/10.1007/s11141-014-9507-8

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