19 September 2001 Spike characteristics of radar sea clutter for extremely small grazing angles: II
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The paper consists of two parts. In the first part the main characteristics of heavy sea are discussed that are essential for radar observation at grazing angles, the sea surface spike characteristics are analyzed in the framework of the statistical theory of random process surges above some boundary, the sea surface shadowing function is considered. In the second part the radar spike characteristics of sea backscattering at frequencies of 10.0, 35.0, 75.0 and 140.0 GHz are analyzed including the polarization and polarization-spectral characteristics of rough sea backscattered signals. During the spikes the depolarization coefficients, spectrum central frequency and spectrum width increasing is marked and the second maximum appearance in the scattered signal spectra is observed. The probable mechanisms are analyzed, the one of these is the backscattering from spray-drop fraction formed by breaking of sea wave.
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Gennady P. Kulemin, Gennady P. Kulemin, "Spike characteristics of radar sea clutter for extremely small grazing angles: II", Proc. SPIE 4377, Laser Radar Technology and Applications VI, (19 September 2001); doi: 10.1117/12.440122; https://doi.org/10.1117/12.440122

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