Digital bearing indicator
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United States of America Patent
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-
May 13, 1980
Grant Date -
N/A
app pub date -
Nov 13, 1978
filing date -
Nov 13, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apparatus for digitally indicating the bearing angle of a source of microwave energy includes an antenna array of a plurality of antenna elements equispaced about an arc of a circle in a plane. Connected to each of the antenna elements is a different input port of a microwave power dividing and phase transforming hybrid matrix. Some of the output ports of the matrix are connected to input ports of a plurality of digital phase discriminators whose outputs emit a coded combination of binary level signals. The outputs of the phase discriminators are connected to an ambiguity resolving means which transforms the binary level signals to an unambiguous digital word representing the bearing angle.
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