Accession Number : ADD014187

Title :   Efficient Adaptive Filter Bank.

Descriptive Note : Patent, Filed 10 Jan 84, patented 24 Mar 87,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Lewis, Bernard L

Report Date : 24 Mar 1987

Pagination or Media Count : 7

Abstract : An N-point Fourier transform circuit for a moving target indicator system including a delay circuit with 2N-2 delays, N frequency filters, a processor for forming a main signal and N-1 auxiliary signals via time sample manipulation, a Gram-Schmidt adaptive canceller circuit for decorrelating the N-1 auxiliary signals from the main signal, and a first and second commutating switches. The first switch tracks a given set of N time samples through the delay circuit. The second switch switches the given set of N time samples through a different successive frequency filters of the N frequency filters every transmission. The first switch tracks in synchronism with the second switch and switches to obtain a new given set of N time samples every NT seconds. Radar; PAT-CL-342-160. (jes)

Descriptors :   *RADAR, COMMUTATORS, DELAY CIRCUITS, FILTERS, FREQUENCY, MOVING TARGET INDICATORS, SAMPLING, SIGNALS, SWITCHES, TIME

Subject Categories : Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE