Accession Number : ADD016560

Title :   General Purpose Sidelobe Canceller System.

Descriptive Note : Patent, Filed 26 Feb 79, patented 27 Sep 94,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Kretschmer, Frank F , Jr ; Lewis, Bernard L

Report Date : 27 Sep 1994

Pagination or Media Count : 7

Abstract : A digital, open-loop, sidelobe canceller system includes an arrangement of auxiliary-channel preprocessing cancellers and a series of main-channel cancellers in which specific cancellers average a different number of samples for cancelling both barrage (continuous) jamming and false-target-repeater jamming, which enter the sidelobes of a radar antenna. The preprocessing cancellers and each of the main-channel cancellers, except the last succeeding main-channel canceller, use long-time averaging (averaging over a large number, n, of samples of the main and auxiliary signals, where n 2) for removing barrage jamming from the main signal. The last succeeding main-channel canceller uses short-time averaging (averaging over approximately 2-4 samples) for removing false-target-repeater jamming from the main signal.

Descriptors :   *PATENTS, *RADAR JAMMING, *RADAR INTERFERENCE, ANTENNAS, AUXILIARY, CHANNELS, FALSE TARGETS, JAMMING, LOOPS, NUMBERS, PREPROCESSING, RADAR, RADAR ANTENNAS, REPEATERS, SIDELOBES, SIGNALS, TARGETS, TIME, ANALOG TO DIGITAL CONVERTERS, RADAR COUNTERMEASURES, COUNTER COUNTERMEASURES

Subject Categories : Radar Countermeasures

Distribution Statement : APPROVED FOR PUBLIC RELEASE