Thomas A Cantwell

US Patent:

D3228312, Dec 31, 1991

Filed:

Apr 4, 1989

Appl. No.:

7/333185

Inventors:

Thomas R. Cantwell - Fountain Valley CA

US Classification:

D21223

US Patent:

43553125, Oct 19, 1982

Filed:

Oct 2, 1980

Appl. No.:

6/193199

Inventors:

Gerald L. Bosi - Fullerton CA
Randolph L. Hack - Fullerton CA
Thomas C. Cantwell - Yorba Linda CA
Richard D. Wilmot - Buena Park CA

Assignee:

Hughes Aircraft Company - Culver City CA

International Classification:

G01S 1370

US Classification:

343 5VQ

Abstract:

A processor for operating on video and azimuth signals from a radar system having an antenna which scans in azimuth. The processor enhances the signal-to-noise ratio of the video signals while imposing thereon a substantially constant azimuth delay error. The processor includes a first circuit for forming and storing a count indicative of the video signal history in each range zone. The processor also includes a second circuit for generating and removing a flag signal indicative of azimuth leading and trailing edges respectively of a target pulse in the video signal. A gating circuit is included to pass video signals, for a given range zone, to an output terminal during the presence of a flag signal associated with the zone.