Patents by Inventor Robert G. Fenske, JR.

Robert G. Fenske, JR. 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).

  • Removal of directwave high frequency signal for ionospheric sounder return processing
    Patent number: 11047967
    Abstract: A method of operating a vertical incidence sounder. The sounder transmits a random modulated sounder signal, and receives a return signal, comprising a directwave component and a reflected component. A first cross-ambiguity process between the transmitted signal and the return signal is used to time and frequency align the return signal with the transmitted signal. The direct wave signal is removed, thereby producing a processed return signal. A second cross-ambiguity process between the transmitted signal and the processed return signal is performed to determine a time offset, which is used to estimate an ionospheric height.
    Type: Grant
    Filed: July 12, 2018
    Date of Patent: June 29, 2021
    Assignee: Southwest Research Institute
    Inventors: James H. Nixon, Brock A. Martin, John J. Signorotti, Robert G. Fenske, Jr.
  • Removal of Directwave High Frequency Signal for Ionospheric Sounder Return Processing
    Publication number: 20200018841
    Abstract: A method of operating a vertical incidence sounder. The sounder transmits a random modulated sounder signal, and receives a return signal, comprising a directwave component and a reflected component. A first cross-ambiguity process between the transmitted signal and the return signal is used to time and frequency align the return signal with the transmitted signal. The direct wave signal is removed, thereby producing a processed return signal. A second cross-ambiguity process between the transmitted signal and the processed return signal is performed to determine a time offset, which is used to estimate an ionospheric height.
    Type: Application
    Filed: July 12, 2018
    Publication date: January 16, 2020
    Inventors: James H. Nixon, Brock A. Martin, John J. Signorotti, Robert G. Fenske, JR.