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Measurement of sea wave height by radar sounding with polarizationmodulated signals
https://doi.org/10.32446/0368-1025it.2021-6-59-65
Abstract
Methods for determining the height of sea waves, which are relevant for maritime navigation, have been investigated. The measurement of the height of sea waves by the method of radar sounding by polarization-modulated signals is considered. The energy and spectral characteristics of the radar signal reflected by the sea surface at low angles of incidence are described. An algorithm for calculating the average wave height based on the results of measuring the polarization anisotropy of the specificeffective scattering surface of the sea area is considered. The relation of the average frequency of the amplitude fluctuations of the reflected radar signals with the sea waves is given. The spectral characteristics of radar signals reflected by the sea surface when irradiated with polarization-modulated signals are analyzed. The procedure for forming an effective statistical estimate of the average wave height based on the results of spectral measurements is considered. The errors of the generated estimates of the wave height associated with the measurement errors of the polarization anisotropy of the effective scattering surface and the average frequency of the envelope of the amplitude fluctuations caused by the Doppler effect are analyzed. The results of experimental measurements of the spectra of the amplitude fluctuations of the envelope of the reflected signals at different states of the sea surface are presented. The analytical dependence of the polarization anisotropy of the effective sea scattering surface on the irradiation angle relative to the wave propagation direction is given. A comparison of estimates of the height of sea waves obtained from radar sounding and meteorological observation data is carried out.
About the Author
E. L. Shoshin
Surgut State University
Russian Federation
Russian Federation
Evgeny L. Shoshin
KHMAO-Yugra, Surgut
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Review
For citations:
Shoshin E.L. Measurement of sea wave height by radar sounding with polarizationmodulated signals. Izmeritel`naya Tekhnika. 2021;(6):59-65. (In Russ.) https://doi.org/10.32446/0368-1025it.2021-6-59-65
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