Radar system

Details Radar system Radar system

1969-03-24

1976-03-30

Hubler, Malcolm F.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 74, 343 16LS, G01S 736, G01S 902

Patent

active

039478475

ABSTRACT:
Tracking of a target by a radar possessing electronically controlled nutan (conical scan) is difficult when the target employs pulse jamming techniques, since pulsing of the jammer at or near the nutation frequency causes the radar to break lock on the target. In the present concept, the lobing reference signals for azimuth and elevation are periodically reversed in phase, the reversals of the two signals bearing a quadrature relationship to one another. By thus reversing the direction of nutation in synchronism with the radar pulse-rate switching signal, the deleterious effects of countermeasures on the radar's angle-tracking capabilities are minimized.

REFERENCES:
patent: 2464258 (1949-03-01), Prichard
patent: 3243804 (1966-03-01), Smith, Jr.
patent: 3268893 (1966-08-01), Hauer
patent: 3277468 (1966-10-01), Caspers
patent: 3281837 (1966-10-01), Van Hijfte
patent: 3419868 (1968-12-01), Clayton, Jr.

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