Retrieving of significant wave height and period from the Doppler spectrum of backscattered microwave signal
Retrieving of significant wave height and period from the Doppler spectrum of backscattered microwave signal
- Author(s): M. Panfilova ; M. Ryabkova ; Y. Titchenko ; V. Karaev
- DOI: 10.1049/cp.2018.1084
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- Author(s): M. Panfilova ; M. Ryabkova ; Y. Titchenko ; V. Karaev Source: 12th European Conference on Antennas and Propagation (EuCAP 2018), 2018 page (3 pp.)
- Conference: 12th European Conference on Antennas and Propagation (EuCAP 2018)
- DOI: 10.1049/cp.2018.1084
- ISBN: 978-1-78561-816-1
- Location: London, UK
- Conference date: 9-13 April 2018
- Format: PDF
The algorithm to obtain significant wave height and average wave period from the Doppler spectrum of the signal backscattered from the sea surface is suggested. The backscattering mechanism at small incidence angles is quasispecular and the backscattered signal is calculated in the Kirchhoff approximation. A two-scale model is used to describe the sea surface and in this case, the Doppler spectrum of the microwave radar signal reflected by the sea surface explicitly depends on the second statistical moments of the large-scale part of sea wave spectrum. It is shown that having measured the shift and bandwidth of Doppler spectrum of the reflected signal the model wind waves spectrum can be retrieved and statistical parameters of sea waves such as significant wave height and average period can be obtained. The field experiment was carried out using the Ka-band narrow beam antenna and retrieved sea waves parameters were compared to measurements of string wave gauge, which proved the validity of the algorithm.
Inspec keywords: oceanographic techniques; wind; backscatter; ocean waves; remote sensing by radar
Subjects: Winds and their effects in the lower atmosphere; Instrumentation and techniques for geophysical, hydrospheric and lower atmosphere research; Surface waves, tides, and sea level; Radar equipment, systems and applications; Oceanographic and hydrological techniques and equipment
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