Zhurnal Radioelektroniki - Journal of Radio Electronics. eISSN 1684-1719. 2020. No. 8

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DOI  https://doi.org/10.30898/1684-1719.2020.8.14

UDC 621.369.9


Ultra-wideband impulse sensing of the layered structure of the snow-soil cover. Theoretical research


K. V. Muzalevskiy

Kirensky Institute of Physics, Federal Research Center KSC, Siberian Branch of Russian Academy of Sciences, Akademgorodok 50, bld. 38, Krasnoyarsk, Russia


The paper is received on August 20, 2020


Abstract. In this work, the processes of UWB pulse reflection duration of about 0.5 ns (bandwidth of 4.9 GHz at a level of -10 dB) from the layered structure of the snow-soil cover are theoretically investigated, depending on the moisture, dry bulk density and temperature of mineral soil, density, moisture and height of snow cover, depth of soil freezing. It is shown that if the soil moisture is less than the maximum content of bound water, then using pulsed UWB radar methods it is impossible to distinguish thawed soil from frozen soil. The presence of wet snow is a determining factor (in relation to the temperature and moisture of the frozen soil) affecting the attenuation of the amplitude of UWB pulse reflected from the frozen soil. The fundamental possibility of remote diagnostics of the depth of soil freezing up to 25 cm with a variation in the moisture content of the snow cover from 0% to 3%, as well as the water equivalent of the snow cover with a variation in its thickness from 5 cm to 35 cm and moisture content from 0% to 5% were demonstrated in the paper. In general, the studies carried out show the prospects for the development of pulsed UWB radar systems for remote sensing of the geophysical characteristics of snow and soil cover.

Key words: radiolocation, ultra-wideband pulses, soil moisture, soil temperature, thawed and frozen state of the soil, snow cover, water equivalent of snow cover, dielectric constant.


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For citation:

Muzalevskiy K.V. Ultra-wideband impulse sensing of the layered structure of the snow-soil cover. Theoretical research. Zhurnal Radioelektroniki - Journal of Radio Electronics. 2020. No.8. https://doi.org/10.30898/1684-1719.2020.8.14. (In Russian)