Patents by Inventor Wilhelmus Johannes De Heij

Wilhelmus Johannes De Heij 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 measuring the radial velocity of a target with a doppler radar
    Patent number: 8081105
    Abstract: An embodiment of the invention includes a step of transmitting an OFDM waveform including several frequency carrier signals transmitted simultaneously, the frequency carrier signals being coded in order to improve the Doppler response. An embodiment of the invention includes a step of receiving the echoed waveform from the target. The initial phase of each frequency carrier signal is recovered from the echoed waveform. The recovered initial phase of each frequency carrier signal is cyclically shifted in order to compensate for the Doppler effect and subsequently decoded. A compressed pulse is synthesized from the decoded initial phases.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: December 20, 2011
    Assignee: Thales Nederland B.V.
    Inventors: Recep Firat Tigrek, Wilhelmus Johannes De Heij
  • METHOD FOR MEASURING THE RADIAL VELOCITY OF A TARGET WITH A DOPPLER RADAR
    Publication number: 20090237292
    Abstract: An embodiment of the invention includes a step of transmitting an OFDM waveform including several frequency carrier signals transmitted simultaneously, the frequency carrier signals being coded in order to improve the Doppler response. An embodiment of the invention includes a step of receiving the echoed waveform from the target. The initial phase of each frequency carrier signal is recovered from the echoed waveform. The recovered initial phase of each frequency carrier signal is cyclically shifted in order to compensate for the Doppler effect and subsequently decoded. A compressed pulse is synthesized from the decoded initial phases.
    Type: Application
    Filed: February 23, 2009
    Publication date: September 24, 2009
    Applicant: THALES NEDERLAND B.V.
    Inventors: Recep Firat Tigrek, Wilhelmus Johannes De Heij