Patents by Inventor Randolph L. Nichols

Randolph L. Nichols 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 passively locating radar emissions from rotating transmitters
    Patent number: 7952523
    Abstract: Systems and methods are presented for passive location of transmitters in which two or more receivers time stamp received signals from target transmitters and the time stamped data for each target signal of interest is isolated to identify a peak power time of arrival for the signal at each transmitter from which differential scan observation values are derived, and for each signal of interest a line of position curve is computed based on the differential scan observation value and corresponding receiver locations, and for each signal of interest an estimated target transmitter location is determined based on an intersection of two corresponding line of position curves.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: May 31, 2011
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Jay W Middour, Kelia Bynum, Christopher Huffine, Anthony D'Agostino, Charles Chrisman, C Lane Ellis, Randolph L. Nichols
  • METHOD AND APPARATUS FOR PASSIVELY LOCATING RADAR EMISSIONS FROM TRANSMITTERS
    Publication number: 20100309055
    Abstract: Systems and methods are presented for passive location of transmitters in which two or more receivers time stamp received signals from target transmitters and the time stamped data for each target signal of interest is isolated to identify a peak power time of arrival for the signal at each transmitter from which differential scan observation values are derived, and for each signal of interest a line of position curve is computed based on the differential scan observation value and corresponding receiver locations, and for each signal of interest an estimated target transmitter location is determined based on an intersection of two corresponding line of position curves.
    Type: Application
    Filed: June 9, 2009
    Publication date: December 9, 2010
    Applicant: The Government of the US, as represented by the Secretary of the Navy
    Inventors: Jay W. Middour, Kelia Bynum, Christopher Huffine, Anthony D'Agostino, Charles Chrisman, C Lane Ellis, Randolph L. Nichols