METHOD OF DETERMINING COORDINATES OF A RADIO-FREQUENCY SOURCE FROM AN AIRCRAFT BOARD USING A TRI-ORTHOGONAL DIPOLE ANTENNA SYSTEM Russian patent published in 2021 - IPC G01S1/08 G01S5/04 G01R29/08 

FIELD: radio equipment.

SUBSTANCE: invention relates to radio engineering and can be used in radio monitoring systems when solving the task of hidden determination of radio-frequency source (RFS) coordinates, in conditions of a priori uncertainty relative to polarization and spatial parameters of radio signals, noise and interference, when requirements to minimization of overall dimensions of direction-finding antenna system are required, in particular for determination of RFS coordinates from aircraft board. Method is based on TODAS measurement of orthogonal components E_x1, E_y1, E_z1 and E_x2, E_y2, Ε_z2 electric field strength vectors with interval equal to quarter of electromagnetic wave T / 4 period of measured radio signal at moments of time t₁ and t 2 , determination of orientation of vectors in space, construction of auxiliary planes Ω_E1 and Ω_Ε2, construction of position line RFS l, selection of the Earth surface as the surface of the RFS position, calculation of the RFS coordinates at the intersection point of the position line RFS l with the Earth's surface.

EFFECT: reduced time spent on determination of coordinates of RFS, based on use of a tri-orthogonal dipole antenna system (TODAS), consisting of three antenna elements in form of asymmetrical dipoles of pin type.

1 cl, 10 dwg