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ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa
CURRENT PROBLEMS IN REMOTE SENSING OF THE EARTH FROM SPACE

  

Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2016, Vol. 13, No. 5, pp. 55-67

Experimental research of short-wave part of wind-waves spectrum. Preliminary analysis of radiometric remote measurements

I.N. Sadovsky 1 , А.V. Kuzmin 1 , M.N. Pospelov 1 , D.S. Sazonov 1 , E. V. Pashinov 1 
1 Space Research Institute RAS, Moscow, Russia
Accepted: 01.08.2016
DOI: 10.21046/2070-7401-2016-13-5-55-67
The paper presents the results of wind-waves research performed by authors during four years of experiments. Determination of gravity-capillary wave spectrum parameters was carried out on the basis of a method called Non-Linear Radio-Thermal Resonance Spectroscopy (NRRS-method). This method allows one to retrieve the curvature spectrum of gravity-capillary waves and the value of long-wave slope variance, both averaged over azimuth angle. As an input data for the NRRS-method, the results of remote radio-polarimetric observations of waved sea surface are used. The results cover the range of wave numbers from 0.39 up to 15.707 rad/cm and are obtained from sea-surface self-radiation measurements at a wavelength of 8 mm. In total, about 1500 experimental curves corresponding to an extensive set of weather condition combinations are retrieved. The restored spectral curves have common features with well-known models of spectrum presented in literature. Their prominent dependence on wind intensity is demonstrated.
Keywords: spectrum, wind waves, gravity-capillary range, microwave radiation, remote sensing, method of Non-Linear Radio-Thermal Resonance Spectroscopy
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