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• W4312581619 abstract "Coherent microwave radar is one of the effective devices for ocean wave measurements. However, the accuracy of wave inversion is significantly affected by the non-gravity wave components (referred to as non-wave components in this work) such as broken waves and shadows in the sea echoes. In this article, a new method based on the Radon transform and discrete Fourier transform (DFT) is proposed to suppress the non-wave components. First, the spatial-temporal velocities are calculated based on the raw data obtained from coherent microwave radar. Second, the Radon transform and DFT are performed on the spatial-temporal velocities to obtain the distribution of the spatial-temporal velocities in the Radon-Fourier transform domain. Following this, non-wave components are eliminated in accordance with the phase velocity and frequency distribution of the wave components. To validate the method, we analyzed the experimental data collected with a coherent S-band radar in Weihai in December 2021. After removing the non-wave components from the radar echoes, we invert three wave parameters including peak wave period, peak wave direction, and significant wave height, and compare them with the <italic xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>in-situ</i> data. The results indicate that the method can effectively remove the non-wave components from the wave echoes without any empirical parameters." @default.
• W4312581619 created "2023-01-05" @default.
• W4312581619 creator A5004274884 @default.
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• W4312581619 date "2022-01-01" @default.
• W4312581619 modified "2023-10-11" @default.
• W4312581619 title "A New Method to Suppress Non-Wave Components in Sea Echoes of Coherent Microwave Radar Based on Radon Transform and Fourier Transform" @default.
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• W4312581619 doi "https://doi.org/10.1109/tgrs.2022.3228814" @default.
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