Patents by Inventor Albrecht Ludloff

Albrecht Ludloff 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 detecting and classifying helicopters
    Patent number: 5231402
    Abstract: To detect and classify a helicopter as a target by means of a radar system equipped with a Doppler filter bank, an initial determination is made as to whether the threshold value has been exceeded in a substantial number of the individual filters of the Doppler filter bank, and if so, the width of that amplitude band delimited by the highest and lowest amplitudes of the filter output signals is determined and a decision regarding the presence of a helicopter target is derived from the width of the amplitude band.
    Type: Grant
    Filed: August 11, 1986
    Date of Patent: July 27, 1993
    Assignee: Telefunken Systemtechnik GmbH
    Inventors: Albrecht Ludloff, Manfred Minker, Frank Hagedorn