Richard W Colbert

US Patent:

40620123, Dec 6, 1977

Filed:

Apr 30, 1976

Appl. No.:

5/681997

Inventors:

Richard P. Colbert - East Meadow NY
George Dimitriou - East Northport NY
Max E. Jones - Northport NY
Jack I. Haberman - Plainview NY

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

G01S 914

US Classification:

343 7A

Abstract:

A radar signal processor employs digital circuits to provide two adaptive resholds which act to reject clutter and noise. A digital constant false alarm unit serves to set the first threshold level by comparing an expected false alarm number with a number of noise pulses occurring in a noise gate generated during the radar dead time. The second threshold is set by establishing a background average. The existence of a target in a particular range cell in relation to the second threshold is determined by comparing its hit count with the hit counts of two range cells proximately following it and the two range cells proximately preceding it. A target is automatically acquired in range and velocity by using a memory unit and constructing a velocity-range matrix which identifies range and velocity by pattern recognition techniques.

US Patent:

54975603, Mar 12, 1996

Filed:

Jan 27, 1995

Appl. No.:

8/379177

Inventors:

David Pasquerella - New Rochelle NY
Richard Colbert - Mount Vernon NY

International Classification:

G01B 506

US Classification:

33836

Abstract:

An apparatus for determining the thickness of a slab structure in which a cylindrical bore has been made. The device comprising a cylindrical tube having opposed longitudinal oriented openings in the wall at the distal end of the cylinder. The cylinder having an indicia scale of length running longitudinally and visibly on the outer surface of the cylinder with the zero point starting at the inner end of the openings. The device having a shaft within the tube having a length greater than the length of the tube, a handle on the proximal end, and a pair of butterfly arms on the distal end of the shaft. The butterfly arms being biased in the outward direction so that when the arms are opposed to the openings in the tube they will extend outward through the openings to engage the outer surface of the slab with the tube extending through the bore in the slab so that the indicia can be read on the inside of the slab to determine the thickness of the slab.