DIRECTION FINDER Russian patent published in 1995 - IPC

FIELD: navigation. SUBSTANCE: direction finder has two channels 1 and 2 for receiving signals, receiving aerials and 3,3', high frequency amplifiers 4,4', converters 6,6' multiplying units 7,7' reading-out units 8,8' counters 9,9' phase tuning units 10,10' control oscillator 11, by-two frequency divider 12, storer 13, six multipliers, 14, 14', 15, 15', 18, 18', five adders 16, 16', 17, 17', 24, filters 19 and 19', transformed frequency generators 20 and 20', phase shift units 21 and 21', squarers 22, 23, switch 25, lower frequency filters 26, 27, unit 28 for controlling operation of generator, phase meter 29, unit 30 for ranging direction, frequency synthesizer 31. EFFECT: reduced random component of error; improved precision of detection. 3 dwg