Patents by Inventor Thomas Jülg

Thomas Jülg 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).

  • Patent number: 6236673
    Abstract: To receive signals of a satellite navigation system that have been band-spread with a PN (Pseudo-Noise) sequence, a receiver is provided in which signal travel times are determined for deriving the distance from satellites. Further included in the receiver is a time-shift control loop, that is, a so-called Delay-Locked Loop (DLL) for performing a tracking synchronization of a locally-generated carrier-frequency signal and cycle and a PN code that is identical to the PN code transmitted from the satellite, the loop having two correlators, of which the one is supplied with a PN sequence that precedes the received PN sequence by one cycle time, or a fraction thereof, and the other is supplied with a PN sequence that follows the PN sequence symmetrically, and the subtracted results are used as a difference cross-correlation function for controlling the voltage-controlled oscillator.
    Type: Grant
    Filed: March 26, 1998
    Date of Patent: May 22, 2001
    Assignee: Deutsches Zentrum fur Luft-und Raumfahrt E.V.
    Inventor: Thomas Jülg