METHOD OF DETERMINING COORDINATES OF A RADIO-FREQUENCY SOURCE FROM AN AIRCRAFT BOARD USING A TRI-ORTHOGONAL ANTENNA SYSTEM Russian patent published in 2019 - IPC G01S5/04 

FIELD: radio engineering and communications.

SUBSTANCE: invention relates to radio engineering and can be used in radio monitoring systems when solving the problem of hidden determination of radio-frequency source (RFS) coordinates under conditions of a priori uncertainty relative to polarization and spatial parameters of radio signals, noise and interference, when restrictions on overall dimensions of direction-finding antenna system are imposed, in particular for determination of coordinates of radio-frequency source from aircraft (AC) board. Method is based on measurement by means of tri-orthogonal frame antenna system of orthogonal components H_x1, H_y1, H_z1 and H_x2, H_y2, H_z2 vectors of magnetic field intensity and at different points of AC location space at moments of time t₁ and t₂, determining orientation of vectors and in space, constructing auxiliary planes Ω₁ and Ω₂, determination of RFS position lines l₁ and l₂ at the intersection of auxiliary planes with the Earth's surface, calculating the coordinates of the RFS at the intersection of said RFS position lines.

EFFECT: high accuracy of determining coordinates of a radio-frequency source.

1 cl, 8 dwg