Peculiarities the navigation satellites signals scattering in the layered structure of the tree stand

Vladimir Podoprigora,Anatoly Sorokin,Dmitriy Kharlamov,G.M Tsybulski Gennady,M.V Noskov,Yu.A Maglinets

doi:10.1051/e3sconf/202022303017

Vladimir Podoprigora, Anatoly Sorokin + Show 4 more

Open Access

https://doi.org/10.1051/e3sconf/202022303017

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Abstract

A scattering and attenuation processes of navigation satellite signals in the forest interaction with tree trank and crown layers a tree stand are presented. The influence of the boundaries soil - tree stand – crown - air on the characteristics of radio signals scattering after interaction with forest is considered. Structural and electro physical features of tree stand elements in the processes of interaction with signals of the L 1 range and experimental data on signal transformations the forest are analyzed.

Highlights

In recent years, for the purpose of remote sensing of the earth's covers, radio wave measurements have been successfully used, effectively using the capabilities of the global navigation satellite system
To extract information about micro- and macro parameters of tree stands from satellite signals processed after passing through the tree stand
It is necessary to use a model of a electromagnetic field interaction with tree elements

Summary

Introduction

For the purpose of remote sensing of the earth's covers, radio wave measurements have been successfully used, effectively using the capabilities of the global navigation satellite system. It is known that at present there is no universal mechanism that takes into account: the multiscale of the forest environment, different radio frequency ranges, the configuration of the experiment, the spatial distribution of trees, the orientation of branches, wood moisture, dielectric properties of wood, bark, leaves and needles. A model description of the interaction of NS signals with a forest assumes the selection of areas with a certain ratio of the sizes of tree elements to the wavelength of radio waves. This allows the correct use of the corresponding approximation. A separate layer or tier of the crown consists of groups of scatterers, each of which is characterized by a certain size and orientation of thin branches with its own distribution function

Boundaries of layers in a tree stand

Radioscopy the volume of larch forest by signals a navigation satellites

Conclusions