Edward S Nichols

US Patent:

8400981, Mar 19, 2013

Filed:

Jul 1, 2009

Appl. No.:

12/496337

Inventors:

Michael R. Hobson - Sterling VA, US
Bryan Achziger - Aurora CO, US
Todd D. Fleming - Rensselaer NY, US
Edward Nichols - Tustin CA, US
Patricia V. Wright - Tampa FL, US

Assignee:

Nextel Communications Inc. - Reston VA

International Classification:

H04W 4/00

US Classification:

370331

Abstract:

A method and system for providing registration coverage in a telecommunications network is disclosed. In accordance with an embodiment of the method, the method includes determining a registration coverage hole in the telecommunications network, providing a single pilot site in proximity to the registration coverage hole, and broadcasting a single registration channel in a 360 degree pattern by the single pilot site. In accordance with an embodiment of the system of the present invention, the system includes the single pilot site in proximity to the registration coverage hole, where the single pilot site broadcasts the single registration channel in a 360 degree pattern.

US Patent:

46936009, Sep 15, 1987

Filed:

Oct 23, 1986

Appl. No.:

6/922797

Inventors:

Michael A. Cross - Severna Park MD
Edward W. Nichols - Reisterstown MD

Assignee:

Westinghouse Electric Corp. - Pittsburgh PA

International Classification:

G01J 100

US Classification:

356121

Abstract:

A system for analyzing the characteristics of a light beam is disclosed. Functionally, the system includes an optical system for collecting the light beam to be analyzed. An array of light-sensitive elements is positioned at the focal plane of the optical system. A digital system sequentially samples the output signals of the light sensors and processes the resulting data to generate signals indicative of the characteristics of the light beam.

US Patent:

47462051, May 24, 1988

Filed:

Jan 30, 1987

Appl. No.:

7/009842

Inventors:

Michael A. Cross - Severna Park MD
Edward W. Nichols - Reisterstown MD

Assignee:

Westinghouse Electric Corp. - Pittsburgh PA

International Classification:

G02B 700
G02B 2710
G02B 508
G02B 510

US Classification:

350574

Abstract:

An attenuated fiducial replica of the far field pattern of a high energy laser beam is obtained by a system and method wherein a first fraction of an incident high energy beam is deflected from one reflective surface of a holey plate and the diffracted orders of the beam are transmitted from the holes to a concave reflector, which reflects diffracted orders toward an opposite reflective surface of the holey plate. A zinc selenide partially reflective member is disposed on-axis between the rear reflective surface and the concave surface for re-reflecting successive fractional portions of the reflected beam a selected number of times to attenuate the beam converging upon a focal plane from an effective focal distance greater than the physical length of the optical system.

US Patent:

47129140, Dec 15, 1987

Filed:

Jan 10, 1986

Appl. No.:

6/817705

Inventors:

Michael A. Cross - Severna Park MD
Edward W. Nichols - Reisterstown MD

Assignee:

Westinghouse Electric Corp. - Pittsburgh PA

International Classification:

G01J 100

US Classification:

356121

Abstract:

A system for characterizing miniature optical sources such as laser diodes is disclosed. In its most convenient form the system includes an optical system for collecting a wide angle beam and collimating the beam into substantially parallel rays. In the substantially parallel beam, equal area angular portions of the wide angle beam should correspond to equal areas in the parallel beam. Optical sensors are utilized to generate signals indicative of the intensity of the parallel optical beam. Digital processing is included to calculate the characteristics of the optical beam from the intensity samples of the parallel beam. In one embodiment, a reflecting plane is positioned between the source and the optical system so that Lloyd's fringes are produced in a measurement plane.

US Patent:

50170040, May 21, 1991

Filed:

Dec 22, 1988

Appl. No.:

7/288387

Inventors:

Michael A. Cross - Severna Park MD
Edward W. Nichols - Reisterstown MD

Assignee:

Westinghouse Electric Corp. - Pittsburgh PA

International Classification:

G01J 100

US Classification:

356121

Abstract:

An electro-optical test tool for testing an input laser beam includes a collecting optics system of attenuating and collimating lenses enabling the test tool to test high powered, high PRF laser sources. A processor controlled CCPD sensor array provides a shuttered laser beam video signal which can be processed using a non-linear technique to improve the dynamic range of the system. Additionally, boresight error correcting capabilities are provided as well as range finding techniques.