Spherical-Wave Reflection from a Two-Layer Medium and Bistatic Microwave Sounding of the Lake Baikal Ice Cover

— A method for calculating the reflection coefficient of a spherical wave from a two-layer medium with flat interface boundaries is developed. The geometrical optics approach is used and the field is found by summing the waves that have experienced different numbers of refractions and reflections. I...

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Published inIzvestiya. Atmospheric and oceanic physics Vol. 58; no. 12; pp. 1684 - 1688
Main Authors Dagurov, P. N., Dmitriev, A. V., Dobrynin, S. I., Chimitdorzhiev, T. N., Baltukhaev, A. K.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.12.2022
Springer Nature B.V
Subjects
Climatology
Earth and Environmental Science
Earth Sciences
Geometrical optics
Geophysics/Geodesy
Ice cover
Lake ice
Lakes
Mathematical analysis
Microwave radiation
Microwave sounding
Microwaves
Optics
Physical Foundations of Earth Exploration from Space
Reflectance
Reflection
Spherical waves
Thickness
Wave reflection
layered medium
spherical electromagnetic wave
reflection
ice cover
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Summary:— A method for calculating the reflection coefficient of a spherical wave from a two-layer medium with flat interface boundaries is developed. The geometrical optics approach is used and the field is found by summing the waves that have experienced different numbers of refractions and reflections. It is established that taking into account the sphericity of the wave is necessary for an arbitrary ratio between the height of the source above the layer and the thickness of the layer. The results of a field study of the reflection of L-band microwaves from the ice cover of Lake Baikal are presented. It is shown that there is a good agreement between the calculated and experimental results.
ISSN:0001-4338
1555-628X
DOI:10.1134/S0001433822120118