Patents by Inventor Boris Fronteau

Boris Fronteau 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 the calibration of the positioning errors of a radar and the drift in ground speed of an inertial unit on board an aircraft
    Patent number: 5883593
    Abstract: A method of calibration includes obtaining an estimation of the ground speed of an aircraft by an inertial unit V.sub.inertial and by a radar V.sub.radar in at least two different flight orientations and in using these estimations to determine the drift in speed B and a rotation matrix R corresponding to positioning errors of the radar with respect to inertial unit on the basis of the matrix relationship:V.sub.inertial =RV.sub.radar +Bapplied for each of the flight orientations. The ground speed and ground speed drift vectors are expressed by their x, y and z components in a referential system related to the aircraft, and the matrix of rotation R being defined on the basis of the angles of positioning error in terms of yaw .phi., attitude .theta. and roll .psi.
    Type: Grant
    Filed: June 20, 1997
    Date of Patent: March 16, 1999
    Assignee: Thomson-CSF
    Inventors: Eric Chamouard, Boris Fronteau, Brice Monod