Patents by Inventor Fred M. Tse

Fred M. Tse 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).

  • Partial intercept LPI (low probability of intercept) reconnaissance system
    Patent number: 5381150
    Abstract: Disclosed is an apparatus and method for separately tracking, identifying and providing DF on LPI RF transmitters. Intercepter circuitry which includes an antenna and a single channel receiver is utilized to receive and down convert LPI RF signals to LPI IF signals. Digitizer circuitry is utilized for down converting the LPI IF signals to LPI baseband signals as well as utilized for converting the LPI baseband signals to digital data. A spectrum analyzer generates power spectrums utilizing the digital data and passes the power spectrums to a signal detector. The signal detector detects signal clusters in the power spectrums and associates the signal clusters from the same LPI RF signals to create pulse descriptor words for the LPI RF signals.
    Type: Grant
    Filed: May 7, 1993
    Date of Patent: January 10, 1995
    Assignee: TRW Inc.
    Inventors: Christopher A. Hawkins, Fred M. Tse