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WAVEFORM OF THE REFLECTED IMPULSE AT THE OBLIQUE SOUNDING OF THE SEA SURFACE
- Authors: Karaev V.1, Titchenko Y.1, Panfilova M.1, Meshkov E.1, Kovaldov D.1
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Affiliations:
- Institute of Applied Physics of the Russian Academy of Sciences
- Issue: Vol 24, No 3 (2024)
- Pages: ES3004
- Section: Articles
- URL: https://journals.rcsi.science/1681-1208/article/view/263984
- DOI: https://doi.org/10.2205/2023ES000910
- EDN: https://elibrary.ru/rzdkcc
- ID: 263984
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Abstract
The height of sea waves is one of the most important characteristics describing the wave climate of the ocean. At the present, the main radar for remote measurement of wave heights is an altimeter. Measurements are performed at the vertical sounding (incidence angle equal to zero). The Brown model was developed to describe the waveform of the reflected impulse at the vertical sounding. There is no theoretical model for the case of oblique sounding. In the Kirchhoff approximation, the theoretical task about waveform of the reflected impulse at oblique sounding was considered. In the result of the investigation, the analytical formula for the waveform of the reflected impulse for oblique sounding at the small incidence angles (< 12◦) for a microwave radar with a narrow antenna beam was obtained. The waveform of the reflected impulse depends on the width of antenna beam, incidence angle, impulse duration, significant wave height (SWH), altitude of the radar, mean square slopes of large-scale, in comparison with radar wavelength, sea waves. It is shown that possibility exist to retrieve SWH using waveform the reflected impulse at the oblique sounding.
About the authors
V. Karaev
Institute of Applied Physics of the Russian Academy of Sciences
Email: volody@ipfran.ru
ORCID iD: 0000-0002-4054-4905
Yu. Titchenko
Institute of Applied Physics of the Russian Academy of Sciences
Email: yuriy@ipfran.ru
ORCID iD: 0000-0001-7762-7731
ResearcherId: S-7854-2016
candidate of physical and mathematical sciences
M. Panfilova
Institute of Applied Physics of the Russian Academy of Sciences
ORCID iD: 0000-0002-3795-0347
E. Meshkov
Institute of Applied Physics of the Russian Academy of Sciences
ORCID iD: 0000-0002-5353-7528
D. Kovaldov
Institute of Applied Physics of the Russian Academy of Sciences
Email: d.kovaldov@ipfran.ru
ORCID iD: 0000-0002-9535-4949
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