PHASE DIRECTION FINDER Russian patent published in 2001 - IPC

FIELD: radiolocation, radio navigation, determination of angular coordinate of source of emission of phase-shift signal. SUBSTANCE: technical result of invention consists in overcoming of contradiction between requirement for measurement precision and clear reading of angular coordinate of source of emission of phase-shift signal by usage of two measurement scales: phase measurement scale-precise, but ambiguous and time measurement scale-coarse, but unambiguous. Phase direction finder has first and second receiving antennas, first and second receivers, first, second and third multipliers, first and second narrow- band filters, 90 degree phase shifter, phase detector, first and second indicators, correlator, controllable delay unit, low-pass filter, extreme regulator and measuring instrument. EFFECT: increased measurement precision. 3 dwg