Patents by Inventor Marcia Bates

Marcia Bates 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 for reducing inter-frequency bias effects in a receiver
    Patent number: 6608998
    Abstract: A calibration procedure for reducing frequency-dependent bias effects in a fixed satellite-based ground-positioning receiver is disclosed, the receiver having the capability to receive both GPS and GLONASS satellite signals. The calibration procedure removes satellite dynamics by utilizing the respective satellite ephemeris data, estimates the change in receiver clock offset by means of GPS measurements, and acquires a set of two or more GLONASS pseudorange measurements while cycling a local oscillator in the receiver through a predetermined sequence of different frequencies.
    Type: Grant
    Filed: September 12, 2000
    Date of Patent: August 19, 2003
    Assignee: NovAtel, Inc.
    Inventors: Janet Brown Neumann, Marcia Bates, Robert S. Harvey