Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1982-12-06
1984-02-07
Buczinski, S. C.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343 5SW, 343 13R, 343 171R, G01S 1300, G01S 728
Patent
active
044306555
ABSTRACT:
A radar system for measuring an angle of a target. A radar antenna produc at any given instant, one of a pair of directional radar beams. The beams are angularly displaced with respect to each other and overlap within the expected target direction. A code generator sends a train of R-F pulses to the radar antenna. An antenna beam switch, connected between the antenna and the code generator, switches, over a set period of time, every other pulse to one radar beam and the remaining pulses to the other radar beam. The two resulting coded pulse groups differ from each other. A receiver is connected to the radar antenna to receive return signals during a time period which corresponds to a given target range distance. The return signals are auto-correlated with replicas of the transmitted coded signals and the respective correlation outputs are ratio compared with each other to determine exact target angles.
REFERENCES:
patent: 2424984 (1947-08-01), Hoffman
patent: 2730710 (1956-01-01), Loeb
patent: 2817835 (1957-12-01), Northington, Jr.
patent: 3332077 (1967-07-01), Nard et al.
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patent: 3573819 (1971-04-01), Mason et al.
patent: 3878525 (1975-04-01), Alpers
patent: 4015261 (1977-03-01), Campbell
patent: 4124850 (1978-11-01), Frazier, Jr.
Buczinski S. C.
Gibson Robert P.
Murray Jeremiah G.
The United States of America as represented by the Secretary of
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