An algorithm for calculating the volumetric soil moisture for a bistatic radar system controller

The article presents an algorithm for calculating the volumetric soil moisture for a bistatic radar system controller based on an algorithm for the joint flight of two unmanned aerial vehicles that make up a bistatic radar system for remote sensing of the soil. The presented algorithm makes it possible to calculate soil moisture with an error of no more than 10%, based on the imaginary and real part of the complex dielectric constant of a layered dielectric with losses (soil) below the air-surface boundary. To verify the adequacy of the proposed algorithm for estimating the percentage moisture content of surface soil horizons, a comparative evaluation of the calculated data was performed with the results obtained using the TDR 150 soil moisture meter of the technology spectrum, Inc. The calculation of percentage moisture was carried out through measurement of soil conductivity using formulas recommended by the International Telecommunication Union Radiocommunication Sector P.527-4 (06/2017).