FIELD: radio direction finding for determining angular position of radio beacons. SUBSTANCE: direction finder has antenna 1, logarithmic receivers 2, 3, receivers 4, 5, correlator 6, logarithmic meter 7, multipliers 8, 12, adder 9, squarers 10, 11, directivity pattern width signal sensor 13, dividers 14, 16, antenna directivity patters angular scattering signal counter 15, indicator 17, subtracter 18. EFFECT: improved accuracy in direction finding due to correlation of amplitude at range finder antenna outputs. 1 dwg
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