MONOPULSE DIRECTION-FINDER Russian patent published in 2008 - IPC G01S3/22 

FIELD: antenna equipment.

SUBSTANCE: monopulse direction-finder consists of two coordinate MP, each of which consists of two channel amplitude sensitive antenna with receivers of corresponding channels, two correlators, outputs of which through summary-difference transducer are connected to the inlets of difference signal divider into summary, besides, antennas of both one-coordinate MP are installed as square antenna grid (AG), moreover, MP contains four adders, and the outlets of receivers of left and right pairs of AG channels correspondingly through the first and second adder are connected to the inputs of correlators of one of one-coordinate MP, and the outlets of receivers of top and bottom pairs of AG channels correspondingly through the third and fourth adders are connected to the inputs of correlators of other one-coordinate MP, the outputs of dividers of first and second one-coordinate MPs are the outputs correspondingly for the azimuth and elevation error signals.

EFFECT: improves accuracy of direction finding with internal noises of receivers.

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