Pulse or digital communications – Repeaters – Testing
Patent
1984-04-18
1987-04-07
Safourek, Benedict V.
Pulse or digital communications
Repeaters
Testing
342368, 342375, 455141, 375102, H04B 1500
Patent
active
046566422
ABSTRACT:
In a spread-spectrum direction-finding system, the outputs of the several antenna elements (10a-d) are progressively translated in frequency by a chirped local oscillator (14) and mixers (12a-d) and applied to a two-dimensional dispersive filter (18), which time compresses the results of single-frequency components in the antenna-element outputs to narrow pulses. Limiters (24a-d) remove any strong narrow-band components that are compressed by the dispersive delay line (18) so that further processing to detect a spread-spectrum signal is not degraded by the presence of narrow-band signals. The use of a common two-dimensional delay line (18) to provide the time compression avoids the need to maintain phase tracking among a plurality of separate parallel one-dimensional dispersive delay lines.
REFERENCES:
patent: 2954465 (1960-09-01), White
patent: 3681695 (1972-08-01), Cease et al.
patent: 3714573 (1973-01-01), Grossman
patent: 3766477 (1973-10-01), Cook
patent: 3815135 (1974-06-01), Martin et al.
patent: 3824595 (1974-07-01), Hall
patent: 3900879 (1975-08-01), Lewinter
patent: 3916313 (1975-10-01), Lowry
patent: 3924236 (1975-12-01), Earp et al.
patent: 4017798 (1977-04-01), Gordy et al.
patent: 4027247 (1977-05-01), Aranguren
patent: 4041391 (1977-08-01), Deerkoski
patent: 4065771 (1977-12-01), Gulick et al.
patent: 4161733 (1979-07-01), Piesinger
patent: 4247939 (1981-01-01), Stromswold et al.
Apostolos John T.
Stromswold Chester E.
Etlinger Louis
Safourek Benedict V.
Sanders Associates Inc.
Weinstein Stanton D.
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