Gary Eugene Russell

US Patent:

40313891, Jun 21, 1977

Filed:

Jun 26, 1974

Appl. No.:

5/483301

Inventors:

Gary R. Russell - Sierra Madre CA
Che Jen Chen - Sierra Madre CA
Kenneth G. Harstad - Pasadena CA

Assignee:

The United States of America as represented by the Administrator of the
National Aeronautics and Space Administration - Washington DC

International Classification:

H01J 3934

US Classification:

250283

Abstract:

The isotope U. sup. 235 is separated from a gasified isotope mixture of U. sup. 235 and U. sup. 238 by selectively exciting the U. sup. 235 from the ground state utilizing resonant absorption of radiation from precisely tuned lasers. The excited isotope is then selectively ionized by electron bombardment. It then is separated from the remaining isotope mixture by electromagnetic separation.

US Patent:

51666944, Nov 24, 1992

Filed:

Aug 20, 1991

Appl. No.:

7/747312

Inventors:

Gary S. Russell - Fullerton CA
J. Brooks Chadwick - Anaheim CA
Jacob L. Bricker - Santa Ana CA

Assignee:

Hughes Aircraft Company - Los Angeles CA

International Classification:

G01S 302

US Classification:

342457

Abstract:

Position location processing using a series of processing routines for enhanced position location in a hyperbolic ranging system adapted to more accurately indicate the position of mobile transmitters within the system. These routines incorporate data in an overdetermined system to refine the position estimate and speed up computation time. The processing utilizes all data received and filters out data caused by radio propagation measurement error that contributes to overall position error. It selects the optimum subset of data to process prior to performing time-intensive mathematical operations which results in a substantial reduction in computation time, allowing for many more overall position computations per second. The advantages of the present position location processing include its ability to incorporate all data received to reduce the overall position error. Processing filters that provide for data extraction and position verification enhance the accuracy and reliability of the position estimate.