Bernard V Kessler

US Patent:

50390295, Aug 13, 1991

Filed:

Jul 1, 1982

Appl. No.:

6/398153

Inventors:

Leonard S. Taylor - Silver Spring MD
Bernard V. Kessler - Greenbelt MD

Assignee:

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

International Classification:

F41G 700

US Classification:

244 311

Abstract:

A monitor determines, from the ground, the orientation (roll and attitude) f a missile by observation of the character of a transmitted signal(s) therefrom. By transmitting to a ground receiver a linearly polarized signal(s), the missile identifies a given plane fixed with respect to its body frame. This plane is identified at the ground receiver by comparing the ratio of the signal(s) received in any two cross-polarized directions. To resolve the attendant 180. degree. ambiguity, the monitor employs an antenna array disposed on the missile that is switchable, back and forth, between two equal power lobes. The monitor operates with a single transmitter, and the simple lobe structure of the transmitted signal(s) is obtained using a linearly polarized antenna array with electronic phase switching between the aforementioned equal power lobes.

US Patent:

40231186, May 10, 1977

Filed:

Mar 24, 1975

Appl. No.:

5/561461

Inventors:

Bernard V. Kessler - Greenbelt MD
Gerald F. Hoff - Ashton MD

Assignee:

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

International Classification:

H01S 300
H01L 3300

US Classification:

331 945H

Abstract:

A superheterojunction (SHJ) laser constructed from periodic structural semiconductor materials. The SHJ laser has approximately a thousand junctions which are planar and layered to provide gain in the plane of the layers. In addition, the device allows beam narrowing and beam steering of its output signal due to the multiple number of output sources with the ability to control the output phase of the combined sources.

US Patent:

50536222, Oct 1, 1991

Filed:

Sep 13, 1973

Appl. No.:

5/398296

Inventors:

Bernard V. Kessler - Greenbelt MD

Assignee:

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

International Classification:

G01F 2300
B64D 104

US Classification:

2503581

Abstract:

This invention relates to an optical detection of ballistics device using satellites emitting beams of neutral molecules in a specified direction. Intense optical radiation will be reflected off insulated surfaces of nose cones and detected by narrow band optical filters on the satellite.

US Patent:

41617029, Jul 17, 1979

Filed:

Sep 28, 1977

Appl. No.:

5/838778

Inventors:

Bernard V. Kessler - Greenbelt MD
Gerald F. Hoff - Ashton MD
James R. Burke - Adelphia MD

Assignee:

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

International Classification:

H01S 319

US Classification:

331 945H

Abstract:

A distributed feedback optical device using a single crystal boule prepared with periodic spatial striations of ternary Pb. sub. 1-x Sn. sub. x Te and Yb impurity atoms forming a layered array of planar p-n junctions normal to the axis of light emission. Crystal surfaces parallel to the axis are coated with a reflective, electrical insulator. Free scattering losses are minimized by applying a magnetic field along the longitudinal axis.