Accession Number : ADD015647

Title :   Frequency Diversity Sidelobe Canceller.

Descriptive Note : Patent, Filed 19 Feb 75, patented 10 Nov 92,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Cantrell, Ben H

Report Date : 10 Nov 1992

Pagination or Media Count : 7

Abstract : A new system and technique for cancelling interference in frequency agile receiving systems. Main and auxiliary signals are supplied to a pair of multiple loop side-lobe cancellers which are capable of being tuned to different frequencies. At the same time, under the control of a timing clock, plural frequencies are selected and multiplexed between two channels at the time of a radar pulse transmission. The side-lobe cancellers and radar are coupled to the channels such that each canceller operates at a given frequency for two consecutive pulse periods, with the radar transmitting at said given frequency during the second pulse period. By continuously cycling between the two channels, each canceller is operating at the proper frequency to cancel interference even though the radar is changing frequency on a pulse to pulse basis.

Descriptors :   *INTERFERENCE, *SIDELOBES, *PATENTS, AUXILIARY, CHANNELS, CLOCKS, CONTROL, FREQUENCY, LOOPS, PULSES, RADAR, RADAR PULSES, SIGNALS, TIME, TRANSMITTING

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE