METHOD OF DETERMINING COORDINATES OF RADIO-FREQUENCY SOURCE FROM AIRCRAFT USING TRI-ORTHOGONAL FRAME ANTENNA SYSTEM Russian patent published in 2024 - IPC G01S3/14 G01S5/12 G01R29/08 

FIELD: radio engineering.

SUBSTANCE: invention relates to radio engineering and is intended for use in radio monitoring systems when solving the problem of hidden determination of coordinates of a radio-frequency source (RFS), in conditions of a priori uncertainty with respect to polarization and spatial parameters of radio signals, noise and interference, when requirements are imposed on minimizing the overall dimensions of the direction-finding antenna system, in particular, for determination of coordinates of radio-frequency sources from board of aircraft (AC). Method is based on arrangement of TOFAS on aircraft moving in space, measurement by means of TOFAS of orthogonal components H_x1, H_y1, H_z1, H_x2, H_y2, H_z2, H_x3, H_y3, H_z3 and H_x4, H_y4, H_z4 of vectors of magnetic field intensity , , and at moments of time t₁, t₂, t₃ and t₄, determination of orientation of vectors , , and in space, construction of auxiliary planes Ω_H1, Ω_H2, Ω_H3 and Ω_H4, plotting lines of position of the RFS l₁ and l₂, calculating the coordinates of the RFS at the point of intersection of the position lines of the RFS l₁ and l₂.

EFFECT: high accuracy of determining coordinates of a radio-frequency source based on the use of an aircraft moving in space and equipped with a tri-orthogonal frame antenna system (TOFAS).

1 cl, 11 dwg, 1 ex