METHOD OF UNAMBIGUOUS DIRECTION FINDING OF RADIO SIGNAL SOURCE Russian patent published in 1998 - IPC

FIELD: radio direction finding, determination of locations of radio radiation sources. SUBSTANCE: proposed method of unambiguous direction finding includes reception of radio signal with the aid of three omnidirectional antennas forming circular array with equal distance b between antennas and measurement of phase difference between signals received by sequential pairs of antennas. In accordance with invention pair of signals which modulus of phase difference is minimum is summed up, phase difference between signal not included in selected pair and summary signal is measured. Azimuth θ and angle β of elevation of source of radio signal which minimum value of wave length exceeds are unambiguously determined by usage of values of above-mentioned phase difference, phase difference between selected pair of signals and angular position relative to reference direction of signal reception point. EFFECT: increased precision of unambiguous direction finding. 2 dwg