Patents by Inventor Brenda E. Eichel

Brenda E. Eichel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • System and method for model-base compression of GPS ephemeris
    Patent number: 7679550
    Abstract: A method for propagating ephemeris data for a satellite in Earth orbit is provided. The method includes the steps of receiving orbital positional data for a first time period of a satellite's Earth orbit, propagating orbital positional data for the satellite's Earth orbit during a second time period extending beyond the first time period, fitting a Keplerian ephemeris model to the propagated orbital positional data to estimate model coefficients, and sending the estimated model coefficients to receivers for determination of receiver position at a time during the second time period.
    Type: Grant
    Filed: February 21, 2007
    Date of Patent: March 16, 2010
    Inventors: James L. Garrison, Brenda E. Eichel