METHOD OF DETERMINING ANGULAR ORIENTATION OF AIRCRAFT Russian patent published in 2024 - IPC G01C21/04 G01S5/02 G01R29/08 

FIELD: navigation.

SUBSTANCE: invention relates to navigation based on signals of radio-emitting objects with known coordinates and can be used as an alternative method of determining angular orientation of an aircraft in space. Disclosed method is based on receiving N≥3 independent spaced apart radio-emitting objects with known coordinates and elliptically polarized radio emissions using a tri-orthogonal dipole antenna system (TODAS) installed on an aircraft. Using TODAS, at each of two times t₁ and t₂, measured are three orthogonal components E_x,n(t₁), E_y,n(t₁), E_z,n(t₁) and E_x,n(t₂), E_y,n(t₂), E_z,n(t₂) of the vectors of electric field strength E_n(t₁) and E_n(t₂) of received signals from each of N independent radio-emitting objects with known coordinates. Orientation of electric field strength vectors E_n(t₁) and E_n(t₂) is determined in Cartesian coordinate system OXYZ. Parameters of direction vectors l_n are determined. Values of aircraft turn angle matrix elements are determined and current angular position of aircraft is determined from their values.

EFFECT: high accuracy of determining angular orientation of an aircraft under conditions of natural, deliberate and unintentional interference, in case of malfunction or failure of a receiver of signals of global navigation satellite systems.

1 cl, 6 dwg