METHOD FOR RADIO SIGNALS POSITION-FINDING AND DIRECTION-FINDER FOR REALIZATION OF SAID METHOD Russian patent published in 2005 - IPC

FIELD: radio engineering.

SUBSTANCE: method includes receipt of radio signals by antenna grid, consisting of N identical non-directional antenna elements, where N>2, positioned in bearing plane, transformation of received radio signals to high-frequency electric signals at intermediate frequency with their following discretization, measurement in each frequency range at matching time spans of complex spectrums of signal couples for each pair of antenna elements, characterizing phases of each radio signal, received in appropriate frequency sub-range by one of antenna elements of pair, selected as signal one, relatively to radio signal phase, which signal is received within same frequency sub-range by other antenna element of pair, selected as supporting one, determining folding of complex-conjugated spectrums for each frequency sub-range, generation of phase differences of radio signals for each pair of antenna elements and each frequency sub-range by Fourier transformations, recording received phase differences of radio signals for each pair of antenna elements and each frequency sub-range, forming and recording of standard phase differences of signals on basis of position of antenna elements of grid, used frequency range and given measurements precision, calculation of value of dispersion function of discrepancies of phase differences by all angular parameters, determining most possible direction of radio signal approach on basis of least total of square discrepancy values. Device for realization of method additionally has block for forming standard phase difference values, second and third memory blocks, subtraction block, multiplier block, adder block and phase difference calculation block.

EFFECT: higher precision, higher efficiency.

2 cl, 9 dwg