Robert C Kirkwood

US Patent:

48976601, Jan 30, 1990

Filed:

Jan 14, 1986

Appl. No.:

6/819528

Inventors:

Archie Gold - Bethesda MD
Robert L. Kirkwood - Pacific Palisades CA

Assignee:

R & D Associates - M. D. R. CA

International Classification:

G01S 1324

US Classification:

342192

Abstract:

Certain man-made structures located in a complex background, such as railroad ties, telephone poles, and fences are detected by a flying craft, using a low powered structure resonant radar system. The radar system transmits a radar signal which includes wavelengths of the same order of magnitude as twice the spacing of the elements of the man-made structure or grating multiples thereof, and transmits them in a plurality of different directions and frequencies. Reflections of the transmitted radar are received and structural resonance backscatter is detected wherein the backscatter amplitude at the resonant frequency is much higher than that at adjacent frequencies or that of the clutter background, indicating the presence of the search-for type of structure. The bright structural resonance backscatter can then be exploted by the structure resonant radar for guidance, homing, etc.

US Patent:

48168327, Mar 28, 1989

Filed:

Feb 19, 1986

Appl. No.:

6/830957

Inventors:

Archie Gold - Bethesda MD
Robert L. Kirkwood - Pacific Palisades CA
Steven L. West - Tijeras NM

Assignee:

R & D Associates - Marina Del Rey CA

International Classification:

H04K 300

US Classification:

342 14

Abstract:

A circuit is described which receives enemy radar signals in the form of encoded bursts or pulses, and which immediately generates and transmits, in sequence, a large number of target denial signals which are similar to the received signal. The transmitted signal masks signals from friendly craft, and deceives the enemy by providing rational false targets for him to engage. The carrier frequency of the enemy or threat, signal is detected, and is used to select one of a group of local oscillation signals which are superheterodyned with the received signal to produce an IF (intermediate frequency) signal which is recirculated and and superheterodyned with the local oscillator frequency to produce a series of signals for transmission that are similar to the received signal. The amplitude and offset doppler of each of the target denial signals are individually controlled prior to retransmission to maximize performance. In the recirculation loop, the circulated signal is hard limited, or clipped, and is also low limited, and also passed through a contoured bandpass to avoid the build up of noise.

US Patent:

20180259937, Sep 13, 2018

Filed:

Mar 10, 2017

Appl. No.:

15/456475

Inventors:

Robert Kirkwood - Nashua NH, US

International Classification:

G05B 19/4099
G05B 19/042

Abstract:

Disclosed is a method of integrating changes to a computer aided manufacturing software application file for a manufactured component comprising the steps of: obtaining a first computer aided design file for the manufactured component; displaying a first solid model of the manufactured component; obtaining a second computer aided design file for a revised version; displaying a second solid model of the revised version of the manufactured component; and matching at least one face on the second solid model to at least one face on the first solid model.