Accession Number : ADA019462

Title :   Design of Digital Filters and Arrays of Sensors.

Descriptive Note : Final rept. 1 Sep 71-31 Aug 75,

Corporate Author : RHODE ISLAND UNIV KINGSTON DEPT OF ELECTRICAL ENGINEERING

Personal Author(s) : Lewis,James T. ; Murphy,Richard ; Cooper,William ; Tufts,D. W.

Report Date : 15 NOV 1975

Pagination or Media Count : 34

Abstract : A numerical method is presented for designing digital filters. The method allows one to minimize the mean-square error or noise power over some intervals of frequency, while simultaneously constraining the maximum error in other intervals of frequency. Thus, for example, one can minimize noise power from a stop band of frequencies while constraining signal fidelity in a passband of frequencies, by limiting the maximum pass-band deviation. Examples are presented of the results of an algorithm, based on linear programming, for improving beam patterns of an array of sensors. Both weighting coefficients and element locations are changed, and the objective is to minimize the maximum sidelobe, subject to a constraint in the look direction. (Author)

Descriptors :   *Digital filters, *Signal processing, Sidelobes, Detector arrays, Bandstop filters, Algorithms, Noise reduction, Weighting functions

Subject Categories : Cybernetics

Distribution Statement : APPROVED FOR PUBLIC RELEASE