Patents by Inventor Gerard Fribault

Gerard Fribault 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 of measuring distance between two observation points
    Patent number: 4639129
    Abstract: The present invention relates to a telemeter and to a method of determining the distance separating two points. The method comprises the steps consisting in (a) comparing the phase (.phi.) of the modulation of an emission signal and of a received returned modulated signal (16), (b) in generating a signal representative of the value of the instantaneous variance (V(.phi..sub.i)) of the phase samples (.phi..sub.i) (107), (c) in generating an estimation of the phase on the basis of a signal derived from the average (.phi..sub.E) of n phase samples (.phi..sub.i) which have been weighted by their instantaneous variance, (d) in generating a signal representative of the value of the distance (D) on the basis of the estimated phase value (.phi..sub.E), and (e) in displaying said value of the distance.
    Type: Grant
    Filed: November 30, 1984
    Date of Patent: January 27, 1987
    Assignee: Societe d'Etudes, Recherche et Constructions Electroniques-Sercel
    Inventors: Francois Hullein, Gerard Fribault