Pseudo-noise radar system

Details Pseudo-noise radar system Pseudo-noise radar system

1975-07-07

1978-09-19

Hubler, Malcolm F.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 14, G01S 956

Patent

active

041157729

ABSTRACT:
A pseudo-noise radar system in which a maximal length binary pulse code of amplitude zero or A amplitude modulates a carrier wave and reverses the phase thereof 180 degrees in synchronism. Either one of the amplitude modulated or phase reversed waves is transmitted. The received wave is then passed through a multiplicative mixer that receives the other wave as an input. The mixer output is then effectively (L + 1)/2 when correlated and effectively zero when phase shifted one bit to one bit less than a word, where L is the word length. Signals not correlated are thus attenuated to an extreme degree. The above-described pseudo-noise radar system may be used with any other conventional equipment for fire control, missile range and/or velocity tracking or otherwise.

REFERENCES:
patent: 2222587 (1940-11-01), Sanders, Jr.
patent: 3130404 (1964-04-01), Fried
patent: 3290677 (1966-12-01), Jacob
patent: 3659292 (1972-04-01), Martin et al.
patent: 3900873 (1975-08-01), Bouvier
patent: 4051472 (1977-09-01), Albanese et al.

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