Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2024, Vol. 21, No. 1, pp. 270-285
Field measurements of sea surface shape and one-dimensional spatial wave spectrum
V.V. Sterlyadkin
1 , K.V. Kulikovskii
1 , I. Badulin
2, 3 1 MIREA — Russian Technological University, Moscow, Russia
2 P.P. Shirshov Institute of Oceanology RAS, Moscow, Russia
3 Skolkovo Institute of Science and Technology, Moscow, Russia
Accepted: 08.12.2023
DOI: 10.21046/2070-7401-2024-21-1-270-285
The paper presents the results of field measurements of sea surface profiles obtained using a scanning laser wave meter along a scanning line with a length of 1700 mm. The importance of registering the surface shape in problems of scattering of electromagnetic radiation by a free interface is noted. Frequency wave spectra, time-height profiles, and spatial spectra including capillary wave components were obtained. The possibility of measuring the phase velocities of various spatial wave components that can be isolated using frequency filtering of many initial profiles is discussed. The non-Gaussian distribution of surface elevations is noted based on the analysis of the highest moments of the distributions: skewness - the up-down asymmetry coefficient and the forward-backward asymmetry coefficient. The results of calculating the spatial spectrum of the sea surface are presented.
Keywords: sea surface shape, frequency spectrum, spatial spectrum, capillary waves, scanning laser wave meter
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