Patents by Inventor David Michael Sneffner

David Michael Sneffner 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).

  • Global positioning system (GPS) carrier phase cycle slip detection and correction
    Patent number: 9182497
    Abstract: A method and detector for detecting a global positioning system (GPS) carrier phase (CP) cycle slip or correcting the GPS CP cycle slip is disclosed. A GPS CP cycle slip detector can include an integrated CP (ICP) change measurement module, an ICP change prediction module, and a processor. The ICP change measurement module can be configured for generating a measured ICP change of a measured CP of a GPS signal for a time duration. The ICP change prediction module can be configured for determining a predicted ICP change of the GPS signal CP for the time duration using directional position information. The processor can be configured for detecting in near real time a GPS CP cycle slip when the measured ICP change varies from the predicted ICP change by greater than a threshold value.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: November 10, 2015
    Assignee: Raytheon Company
    Inventors: George Jeffery Geier, David Michael Sneffner