Waveform of the Reflected Impulse at the Oblique Sounding of the Sea Surface
Author:
Karaev Vladimir1ORCID, Titchenko Yuriy1ORCID, Panfilova Mariya1ORCID, Meshkov Evgeniy1ORCID, Kovaldov Dmitry1ORCID
Affiliation:
1. Institute of Applied Physics of the Russian Academy of Sciences
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.
Publisher
Geophysical Center of the Russian Academy of Sciences
Reference28 articles.
1. Amarouche, L., P. Thibaut, O. Z. Zanife, J.-P. Dumont, P. Vincent, and N. Steunou (2004), Improving the Jason-1 Ground Retracking to Better Account for Attitude Effects, Marine Geodesy, 27(1–2), 171–197, https://doi.org/10.1080/01490410490465210., Amarouche, L., P. Thibaut, O. Z. Zanife, J.-P. Dumont, P. Vincent, and N. Steunou (2004), Improving the Jason-1 Ground Retracking to Better Account for Attitude Effects, Marine Geodesy, 27(1–2), 171–197, https://doi.org/10.1080/01490410490465210. 2. Barrick, D. (1968), Rough Surface Scattering Based on the Specular Point Theory, IEEE Transactions on Antennas and Propagation, 16(4), 449–454, https://doi.org/10.1109/TAP.1968.1139220., Barrick, D. (1968), Rough Surface Scattering Based on the Specular Point Theory, IEEE Transactions on Antennas and Propagation, 16(4), 449–454, https://doi.org/10.1109/TAP.1968.1139220. 3. Bass, F. G., and I. M. Fuks (1979), Wave Scattering from Statistically Rough Surfaces, Elsevier, https://doi.org/10.1016/C2013-0-05724-6., Bass, F. G., and I. M. Fuks (1979), Wave Scattering from Statistically Rough Surfaces, Elsevier, https://doi.org/10.1016/C2013-0-05724-6. 4. Brown, G. (1977), The average impulse response of a rough surface and its applications, IEEE Transactions on Antennas and Propagation, 25(1), 67–74, https://doi.org/10.1109/TAP.1977.1141536., Brown, G. (1977), The average impulse response of a rough surface and its applications, IEEE Transactions on Antennas and Propagation, 25(1), 67–74, https://doi.org/10.1109/TAP.1977.1141536. 5. Fu, L.-L., and A. Cazenave (Eds.) (2000), Satellite Altimetry and Earth Sciences. A Handbook of Techniques and Applications (International Geophysics), 463 pp., Academic Press., Fu, L.-L., and A. Cazenave (Eds.) (2000), Satellite Altimetry and Earth Sciences. A Handbook of Techniques and Applications (International Geophysics), 463 pp., Academic Press.
|
|