FIELD: radio engineering, communication.
SUBSTANCE: invention relates to radio engineering, particularly to single-signal radio direction-finding of a radio-frequency source. The method includes dividing an arbitrary nonlinear antenna system into logic parts on elements (dipoles) of the antenna system. The antenna system is divided into n parts, but not less than three parts (three elements of the antenna system). Measured complex amplitudes of signals obtained from the output of each element are transmitted to a unit for calculating natural logarithms and then to a computer, into which analytical expressions of the natural logarithm of a function have been input, said function describing a complex envelope of output signals of elements of the antenna system, the real and imaginary parts of which are compared with real and imaginary parts of the natural logarithm of the measured complex amplitudes of signals obtained from the output of each element of the antenna system. A system of algebraic equations is obtained, from which analytical expressions are determined for calculating the azimuth bearing θ, elevation bearing β and the initial phase of the signal φ0 according to defined matrix trigonometrical formulae. The bearing β is determined after finding the bearing θ and the initial phase φ0. Dispersion D of the found parameter values is further calculated to find confidence intervals of the determined parameters.
EFFECT: high speed and accuracy of determining azimuth and elevation components of bearings and initial phase of a signal of a radio-frequency source.
