METHOD FOR RADIO SIGNAL SIMULATION Russian patent published in 2023 - IPC G01S7/40 

FIELD: radar technology.

SUBSTANCE: invention can be used in semi-natural modelling of radio wave propagation in air-to-surface, surface-to-air, surface-to-surface and air-to-air channels, taking into account the specular-diffuse nature of scattering and multiple re-reflections from the surface, natural and artificial objects by providing real-time simulation of a radio signal reflected from a spatially distributed radiophysical scene, which is represented by fragments of the earth's surface with varying degrees of roughness and surfaces of artificial objects with different electromagnetic properties. In the claimed method, the mirror-diffuse nature of the scattering of the reflected electromagnetic wave is taken into account, whereas additionally, based on the required accuracy of the radio signal synthesis, the number of rays of the scattering indicatrix N_l of the reflected electromagnetic wave is set in the propagation channels of the electromagnetic wave after setting the beam in line with the elementary area on the facets of the facet model of the polygon and when performing the procedure of multiple re-reflection of the radio signal after calculating the angle of incidence of the beam, the scattering indicatrix of the electromagnetic wave reflected from the elementary area is calculated, N_l local maxima of the scattering indicatrix is searched for, the angle of reflection of each of the N_l rays is determined form the reflected rays of the scattering indicatrix.

EFFECT: increased accuracy of imitation of the reflected radio signal.

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