Patents by Inventor Sergei Podshivalvo

Sergei Podshivalvo 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).

  • Method and apparatus for mitigating multipath effects at a satellite signal receiver using a sequential estimation filter
    Patent number: 7253768
    Abstract: A method and apparatus for mitigating multipath effects in a satellite signal receiver is described. The method includes computing at least one pseudorange residual as a function of (i) a measured pseudorange to a given satellite, and (ii) an expected pseudorange to the given satellite, which is derived by mathematically projecting a pseudorange to the given satellite. The method also includes applying the measured pseudorange to a sequential-estimation filter, which is configured to solve a navigation-solution problem, when the pseudorange residual satisfies a given threshold.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: August 7, 2007
    Assignee: Global Locate, Inc
    Inventors: Frank van Diggelen, Charles Abraham, Sergei Podshivalvo