Determination of jammer range and azimuth by use of a coherent s

Details Determination of jammer range and azimuth by use of a coherent s Determination of jammer range and azimuth by use of a coherent s

1975-06-26

1994-11-01

Blum, Theodore M.

Communications: directive radio wave systems and devices (e.g.,

Directive

Utilizing correlation techniques

G01S 316, G01S 328

Patent

active

053610733

ABSTRACT:
An improved countermeasure detection system and technique for determining e range and azimuth of a noise jammer in a radar environment. A signal limiter is inserted into the output loops of a conventional multi-loop side-lobe canceller system such that the loops only respond to interference signals in the main lobe of a radar antenna as it sweeps through the jamming source. Each of the loops develops a weighting signal that is a measure of the absolute phase of the interference signal at an auxiliary antenna with respect to the phase center of the main radar antenna. By using two or more weighting signals and the known placement of each auxiliary antenna relative to the main radar antenna, the range and azimuth of a jammer can be calculated using available processing equipment to solve simultaneous equations.

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