Accession Number : ADD002660

Title :   Sidelobe Canceller System.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Lewis,Bernard L ; Olin,Irwin D

Report Date : 10 Feb 1976

Pagination or Media Count : 7

Abstract : The patent describes an improved side-lobe canceller system for reducing interference introduced into a signal receiving system from multiple interference sources. A first canceller loop associated with an auxiliary channel operates independently to decorrelate its auxiliary signal and the output sample of a main channel signal from its own subtractor. Each of a remaining plurality of canceller loops, also associated with an auxiliary channel and operating independently, are serially connected to successively operate on the output of a previous canceller loop. When all auxiliary canceller loops have operated, a second series of the same canceller loops arranged to follow the first series, provides an additional iteration to the canceller system. By utilizing a plurality of serially arranged iterations to operate on the signals received by the plurality of auxiliary channels, the interference in the main channel may be significantly reduced. Used for radar antijamming.

Descriptors :   *Antenna lobes, *Signal processing, *Antijamming, *Patents, Radiofrequency interference, Cancellation, Radar antennas

Subject Categories : Electrical and Electronic Equipment
      Radio Countermeasures
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE